China Changzhou Dingang Metal Material Co.,Ltd. Company News

Brushed aluminium coils As an important metal material that was developed earlier, brushed aluminum coils are currently widely used in people's daily lives and various fields of industrial production. Aluminum products have application advantages such as light weight and strong plasticity. Aluminum products have become It is an indispensable component of our daily life, so how should we judge the quality of aluminum products when choosing them and what factors should we pay attention to when using them?  To judge the quality of aluminum products, you can mainly observe the thickness of the oxide film. If the oxide film is If the thickness does not meet the specification, the surface of the aluminum product will easily rust and be corroded. If aluminum products are doped with many other chemical components, the chemical composition of the aluminum products will be unqualified and seriously endanger the safety engineering. How to choose High - Quality Brushed Aluminum Coil   Look at the thickness: According to national standards, the thickness of exterior wall panels should be 4 mm, and the thickness of brushed aluminum panels should be 0.5 mm; the thickness of interior wall panels should be 3 mm, and the thickness of brushed aluminum panels should be 0.2 mm; the aluminum panels of exterior wall panels are significantly thicker than those of interior walls. The aluminum plate of the board is hard. To check the adhesion of the paint, you can use a sharp blade to mark some 1*1 mm squares on the paint surface, then stick the tape firmly on the squares and then quickly tear off the paint film. There should be no peeling off. Smell: Peel off the aluminum plate and there should be no pungent smell of organic solvents. Observe its shape: The size of the brushed aluminum plate should be standardized and neat, the thickness should be uniform, the surface should be smooth, and the plate shape should be straight. The product cannot stand when the board is placed on the ground. Lift one end of the board and weigh it. It should not feel too soft. Peel off the protective film on the surface of the product and observe that the paint surface should be clean and tidy, with no surface defects such as color difference, spots, scars, uneven gloss, and missing paint. Price comparison: Since the prices of the main raw materials for brushed aluminum plates are very high, plus equipment depreciation, labor management costs and production profits, the price has a certain bottom line. At present, the production profits of aluminum plates have almost dropped to a very low level, which is obviously excessive. Low price must be a salient feature of fake and shoddy products. Observation after boiling: Boil the sample for 2 hours, and observe after cooling. There should be no glue opening between the brushed aluminum plate and the plastic. According to the method introduced above, the paint film should be free of glue peeling and brittleness. Observe whether there is brittle fracture. Cut out a piece of aluminum veneer and bend it hard. The brushed aluminum plate should not have obvious brittle fracture. With its timeless elegance, exceptional durability, and versatile appeal, brushed aluminum sheets continue to redefine modern design and industrial innovation. Whether for architectural masterpieces, consumer electronics, or premium interiors, our precision-engineered brushed finishes offer a perfect blend of aesthetics and performance. Elevate your projects with the enduring sophistication of brushed aluminum—where style meets substance. CHANGZHOU DINGANG METAL MATERIAL CO.,LTD Add: 12F,Bldg2,ZhiXin Biz Plaza,No.25 North Street,Zhonglou District,Changzhou,Jiangsu,China Web: www.prepaintedaluminium.com / www.cnchangsong.com       Email:chen@cnchangsong.com Tel: +0086 15212809398  (Whatsapp / Wechat)

What's the Impact of U.S. Aluminum and Steel Tariff Increases in 2025?   In 2025, the U.S. will raise tariffs on steel and aluminum imports by 25% (the original aluminum tariff will rise from 10% to 25%), eliminate allied exemptions and extend to steel and aluminum derivatives, which will have a multi-dimensional impact on the global economy and the U.S. itself:   I. U.S. Domestic Impact: Short-term Industrial Pain and Long-term Economic Risks Soaring costs in downstream industries Automotive and aerospace: the cost of a single car has increased by more than US$1,000, and the budgets of military projects such as the F-35 fighter jet have been overspent; aluminum accounts for 80% of the weight of an aircraft's fuselage, and high-purity aluminum relies on imports from Canada, which has pushed up the cost of manufacturing and maintenance. Consumer Goods and SMEs: Price increases for aluminum cans (Coca-Cola), appliances, medical devices, caskets, fishing gear, etc.; small craft breweries are on the verge of losing money due to the rising cost of aluminum cans. Energy & Infrastructure: Shale oil companies are losing competitiveness in energy exports due to surging import costs of specialty steel; rising costs of raw materials (rebar, aluminum) in the construction industry are driving up residential and commercial construction costs. Inflationary and Employment Pressures Inflationary pressures intensified as the U.S. CPI rose 2.8% year-over-year in February, involving more than $150 billion in imports (289 categories). Short-term job creation in the steel industry (e.g., 14,000 in 2018), but more job losses in downstream manufacturing (automotive, machinery, etc.) (75,000 in 2018), with a negative net employment effect. The Peterson Institute for International Economics calculates that each steel job saved costs taxpayers $900,000 per year. Industry competitiveness and supply chain woes Insufficient local steel and aluminum capacity (U.S. aluminum production is only 1% of global production), unchanged dependence on imports, and downstream companies forced to raise prices or restructure supply chains (e.g., shift to Southeast Asia), but at risk from new tariffs. High energy costs (Alcoa's electricity costs $36/MWh, far exceeding Canada's hydroelectric advantage), old technology and equipment, with some companies (e.g., Missouri aluminum plants) shutting down again due to cost pressures.     II. International response: allied countermeasures and the reconfiguration of global trade patterns Retaliatory measures by allies Canada: as the largest supplier of steel and aluminum to the U.S. (accounting for more than 25% of imports), it was hit with 50% total tariffs, announced reciprocal tariffs on $29.8 billion of U.S. goods (steel, computers, sports equipment), and suspended surcharges on some U.S. electricity exports. EU: tariffs on €26 billion of U.S. goods (alcohol, textiles, appliances) from April 1, criticizing the U.S. for “disrupting supply chains and jobs.” Other countries: Australia unsuccessfully sought exemptions; South Korea and Japan's steel exports were hit (South Korea's exports to the U.S. accounted for 9.8% of its total) and shifted to Southeast Asia for re-export; Brazilian and Mexican supply chains came under pressure, with Brazil's vice president calling the U.S. initiative “wrong and damaging to global trade.” Multilateral trading system damaged Allies accuse US unilateralism of undermining trade partnerships, with Canada's foreign minister saying “there are no winners in a trade war”. the WTO had ruled that the 2018 steel and aluminum tariffs were in violation of the law, but the US continues to escalate the measures, undermining the authority of multilateral rules. Accelerated reconstruction of the global supply chain: Canadian aluminum companies shifted to the EU leading to its oversupply, and the EU carbon border mechanism (coming into effect in 2026) further impacted the aluminum industry in high-carbon emitting countries (e.g., Brazil); companies accelerated the regionalization of their layout to reduce their reliance on the US.   Contact Us To Know More About Pre-painted Aluminum Product If You Wanna Save Money And Expolore Your Local Market. www.prepaintedaluminium.com / www.cnchangsong.com Email: robert@cnchangsong.com Phone: 0086 159 6120 6328  

Product Overview: 3000 series aluminum-coated color coil is made of aluminum-manganese alloy (such as 3003 and 3004) as the base material, and the surface is cleaned, chemically converted, and coated with PVDF or PE color coating, which has the lightweight, corrosion resistance and decorative protection function of aluminum. With a typical thickness of 0.2mm-1.5mm, a width of up to 1500mm and a roll weight of 3-10 tons, it is the preferred material for construction, packaging and industrial fields.                   1.Core Benefits & Features: Material performance advantages High Strength & Formability:The tensile strength of 3003 aluminum alloy (containing 1.2% manganese) is 145MPa, which is 30% higher than that of pure aluminum (1 series), and is suitable for deep drawing and stretching processing (such as tanks and complex structural parts).3004 aluminum alloy (containing 1.2% manganese + 1% magnesium) has higher strength (tensile strength 180MPa), which is suitable for load-bearing scenarios (such as building curtain wall skeleton).Corrosion Resistance:Aluminum-manganese alloy substrate + coating double protection, salt spray test ≥ 1000 hours (ASTM B117), suitable for high-corrosion environments such as coastal, chemical industry, etc.Lightweighting:The density is 2.73g/cm³, which is only 1/3 of steel, and the transportation and installation costs are reduced by 20%. 2. Surface treatment and functionalityCoating Diversity:PVDF coating: UV resistant, chemical resistant, color retention for more than 15 years (RAL/Pantone color optional).PE coating: economical for indoor applications (e.g. home appliance panels) with matte, pearlescent effects.Special functional coatings: antimicrobial (ISO 22196), self-cleaning (lotus leaf effect), conductive (EMI shielding).Processing Adaptability:It supports slitting, stamping, and roll forming, and is compatible with automated production lines (such as continuous roll coating process).3. Environmental protection and economy100% recyclable: The energy consumption of aluminum recycling is only 5% of that of primary aluminum, which is in line with the EU's Green Deal carbon neutrality goal.Cost advantage: 15% lower cost than 5000 series aluminum-magnesium alloy, 40% lower than stainless steel comprehensive cost. Core application areas and market value: Construction industryCurtain wall and roof: lightweight to reduce building load, coating weather resistance to extend maintenance interval;Interior decoration: Diverse colors are used for ceilings and walls to increase design flexibility.Market advantage: replace traditional steel and stainless steel, reduce the comprehensive cost by more than 30%.TransportationBody and interior: lightweight to reduce fuel consumption and help improve the battery life of new energy vehicles;Containers and carriages: corrosion resistance, prolong service life, adapt to high humidity and salt spray environments.Appliances & PackagingAppliance panels (e.g. refrigerators, air conditioners): easy-to-clean surface, anti-fingerprint coating technology;Food packaging: FDA compliant, non-toxic coating ensures safety.New energy fieldPhotovoltaic bracket: corrosion resistance is suitable for long-term outdoor exposure;Battery shell: Lightweight and conductivity are balanced, supporting efficient heat dissipation of energy storage devices. 4.Market competitive advantage analysis: Balance performance with costCompared with the 5000/6000 series: the 3000 series has a lower cost and is suitable for large-scale applications;Compared with steel: weight reduction of more than 50%, processing energy consumption reduced by 20%-30%.Environmental complianceRecyclability: Aluminium has a recycling rate of more than 95%, reducing the carbon footprint;Green coating: Chromium-free pretreatment technologies (e.g. zirconium, titanium) comply with EU RoHS/REACH regulations.Customization capabilitiesSupport flexible customization of thickness (0.2-3.0mm), width (800-1600mm) and coating type;Quickly respond to the individual needs of construction, automotive and other industries. 5.Sustainable development values: Energy saving and carbon reduction contributions The energy consumption of aluminum coil production is 60% lower than that of steel, and the energy consumption of recycling is only 5% of that of primary aluminum;Lightweight applications indirectly reduce carbon emissions in transportation and construction.Long life cycle economicsThe service life can be up to 30 years (PVDF coating) with very low maintenance costs;The recycling residual value is high, and the price of scrap aluminum is stable at 80%-90% of primary aluminum. 6.Future Trends and Challenges:The direction of technological innovationUltra-thin coating technology: nano-coating improves scratch resistance;Smart surfaces: photocatalytic self-cleaning coatings, heat-reflective coatings (to reduce building energy consumption).Market challengesfluctuations in raw material prices (aluminium ingots are affected by energy and international trade);Alternative material competition (e.g., magnesium alloy, carbon fiber penetration in the high-end field). With its lightweight, corrosion resistance, color diversification and environmental protection and recyclability, 3000 series aluminum color coating coil has become the preferred material in the fields of construction, transportation, new energy and other fields. With the advancement of green manufacturing and carbon neutrality goals, its technological upgrading and circular economy value will be further released, and it will continue to occupy the core position of the high-end industrial materials market.   If you have needs on the aluminum coil or sheet product,please contact us for more discussing. Changzhou Dingang Metal Material Co.,Ltd www.cnchangsong.com www.prepaintedaluminium.com Email:gavin@cnchangsong.com Phone: 0086 13961220663 (whatsapp & wechat)

Dingang Color coated aluminium coils are an ‘all-rounder’ in the field of architecture. It is rich in colour, gloss and texture, and can create a highly individual and aesthetic building appearance. Its surface coating is corrosion-resistant, UV-resistant, and has a long service life in harsh climates. The material is light but strong, reducing the load on the building structure and guaranteeing the stability of the components at the same time. It has excellent heat and fire insulation performance, which is both energy-saving and safe. Processing plasticity, can be made into a variety of components, easy to install, significantly shorten the construction period, and recyclable, in line with the concept of environmental protection, for the building to inject. BUILDING CONSTRUCTION APPLICATIONS Curtain system application Colour coated aluminium coils produced by Dingang can be made into curtain wall panels of various shapes and sizes, such as rectangular, triangular, curved, etc., through cutting, bending, welding and other processes, to achieve the architect's unique design concepts and create a unique appearance for the building. Celling system application Typical Specifications As Below: Alloy: 3003/3004 Temper: H24, H26 Thickness: 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm.                                                           Coating thickness:25-28micro Width range: 200mm-1300mm Colour: mainly white Protective film: transparent, can be customised according to customer's logo protective film      Roofing System Application Colour coated aluminium coil is favoured in various large-span metal roof structures and corrugated insulation systems because of its aesthetics, light weight, easy processing, durability and recyclability. Typical Specifications As Below: Alloy: 3003/3105/5005 Temper: H16/H24/H26 Width: 500-1600mm Thickness: 0.2-1.6mm Recommended Colors Or Patterns: Ral 100l Beige,Ral 5015 Sky Blue,Ral 9016Traffic White,Wood Grain,Marbling,Camouflage Gutter System Application Typical Specifications As Below: Alloy: 3105/3003 Temper: H24 Thickness:0.6-1.0mm Width: 250-500mm which are strong enough to be easily machined. Aluminium coils are roll coated with polyester (PET) paint on both sides, with a thickness of 25-28um for double coating and 15-18um for single coating, resulting in a smooth, even and durable surface. Rolling Door & Blind Application Dingang’s colour coated aluminum sheets feature excellent corrosion resistance, ensuring long - term durability even when exposed to harsh outdoor conditions. They are also light - weight yet strong, which makes installation easy for rolling shutter doors and blinds. The rich color options not only add aesthetic appeal but also blend well with various architectural styles. Typical Specifications As Below: Alloy: 3105/3005/3003 Temper: H26 Thickness: 0.2-1.0mm Width:138mm or customized Back Coating:  Epoxy Colours: scratch-resistant white, scratch-resistant grey-silver etc. Typical Specifications As Below: Alloy: 3005 Temper: H47 uncoated thickness:0.4mm paintcoated thickness:0.43mm Width:94mm Color:RAL – 1015, 9003, 9006, 9007, 7016, 8014, 8017, 9005.

What are the differences between aluminum-magnesium-manganese plates and color steel plates?   When selecting roofing or cladding materials for construction projects, aluminum-magnesium-manganese (AlMgMn) and color-coated steel panels are two popular choices with distinct characteristics. Both materials offer durability and versatility, but their differences in composition, performance, cost, and applications make them suitable for unique scenarios.                                                                                               Aluminum-magnesium-manganese plates VS color steel plates 1.Different durability Aluminum-magnesium-manganese plates have good corrosion resistance because they can form a layer of aluminum oxide film with the atmosphere, making their service life up to 50 years. However, color steel plates are different. They are particularly prone to corrosion and rust in humid environments, leading to fractures. 2.The strength and stiffness are different Although the aluminum in aluminum-magnesium-manganese panels does not have an obvious yield point in terms of strength and hardness, it also contains magnesium and manganese, so it has certain strength and stiffness. On the contrary, the color steel plate has better strength and stiffness and is not easily deformed. 3.Different in weight.  Aluminum-magnesium-manganese panels are lightweight,although mainly composed of aluminum, their density is only one-third that of steel.                               4.Lightning protection performance is different These two building materials are usually used for roofs and exterior walls, so it is also necessary to consider their lightning protection performance. The thickness of aluminum-magnesium-manganese plate is generally 0.7mm-1.2mm, which can be directly used as a lightning protection flash device, and the lightning protection effect is good; while the thickness of color steel plate is only 0.5mm. Steel plate cannot be directly used as a lightning protection device, and other lightning protection devices are required. 5.The cost performance is different The aluminum-magnesium-manganese plate is cost-effective, light in weight, waterproof, easy to bend, and has good three-dimensional visual effect, while the color steel plate is heavy in quality, poor in waterproofing, strong in rigidity and poor in bending, and the artistic effect is not as good as the aluminum-magnesium-manganese plate.   6.Fire safety is different Aluminum-magnesium-manganese plate has low melting point, poor high temperature resistance, fire is easy to burn, and the fire spreads outward, which is convenient for firefighters to put out the fire, but the melting point of color steel plate is very high.                                       Conclusion: In summary, aluminum-magnesium-manganese (AlMgMn) and color-coated steel panels offer distinct advantages tailored to specific project requirements. AlMgMn stands out for its lightweight durability, corrosion resistance, and aesthetic appeal, making it ideal for high-end, long-term architectural applications. Color-coated steel, while more cost-effective and versatile in standard constructions, may require additional maintenance in harsh environments. Choosing between them hinges on balancing budget, environmental exposure, and design goals. Both materials continue to evolve, ensuring innovative solutions for modern building envelopes.

As industries around the globe are constantly evolving, driven by the pursuit of innovation, cost - effectiveness, and sustainability, the selection of appropriate materials has become a linchpin in maintaining a competitive edge. In this context, the 5052 aluminium sheet has surged in popularity, carving out a significant niche for itself in the industrial material market. With the increasing need for materials that can endure harsh operating conditions, facilitate efficient manufacturing processes, and contribute to the lightweighting revolution, the 5052 aluminium sheet has emerged as a frontrunner. But what are the underlying characteristics of this alloy that have made it so appealing to industries ranging from aerospace and automotive to construction and electronics? Let's embark on an exploration to uncover the secrets behind the widespread acclaim of the 5052 aluminium sheet in the industrial realm. Firstly, let's look at the following table 5052 aluminium plate chemical composition  Alloy Si Fe Cu Mn Mg Cr Ni Zn Ti Ag B Bi Ga Li Sn V Zr Single Total Al 5052 0.25 0.4 0.1 0.1 2.2-2.8 0.15 0.35 0.1                   0.1 0.2 remain Note: The value of Si is 0.25%, which means the content does not exceed 0.25% Secondly, The 5052 aluminum sheet comes in various alloy tempers, each with distinct characteristics and applications, details as following table: Alloy Temper Thickness(mm) 5052                 O/H111 0.2-400 H12/H22/H32/H14/H24/H34/H16/H26/H36 0.2-8.0 H18/H28/H38 0.2-4.0 H112 4.0-400 F 0.2-500 The following table introduces the mechanical properties of 5052 aluminum plates. It includes various parameters related to different alloy states, such as tensile strength, yield strength, and elongation. These data are crucial for evaluating the performance of 5052 aluminum plates in different applications, helping manufacturers and engineers make informed decisions about material selection. Temper Thickness(mm) Tensile Strength (Rm/Mpa) Yield Strength (Rp0.2/Mpa) Elongation Rate (Not Less Than) H18 0.2-0.5 270 240 1 0.5-1.5 2 1.5-3.0 2 H28 0.2-0.5 210 3 H38 0.5-1.5 3 1.5-3.0 4 6.0-12.5 190 80 7 H112 12.5-40 170 70 - 40-80 - F 2.5-150 - - - H24 0.2-0.5 230-280 150 4 0.5-1.5 5 H34 1.5-3.0 6 3.0-6.0 7 H16 0.2-0.5 250-300 210 2 0.5-1.5 3 1.5-3.0 3 3.0-6.0 3 H26 0.2-0.5 250-300 180 3 0.5-1.5 4 H36 1.5-3.0 5 3.0-6.0 6 5052 aluminum plate, renowned for its excellent mechanical properties, finds extensive applications in diverse fields. Here are three major applications: In the Field of Cabinets​ Structural Integrity: The medium - strength 5052 aluminum plate, as indicated by its tensile and yield strengths in the table, can effectively support the structure of motor cabinets. During the operation of motors, which may generate vibrations, the 5052 aluminum plate - made cabinet can withstand these vibrations without deforming, ensuring the stable installation and operation of internal motor components.​ Electromagnetic Compatibility: Its good electrical conductivity, a characteristic related to its mechanical structure, enables 5052 aluminum plate to function as an effective electromagnetic shield. Motors often produce electromagnetic interference, and the use of 5052 aluminum plate in cabinet manufacturing can prevent this interference from radiating outwards, thus protecting other electronic devices in the vicinity. At the same time, it shields the motor from external electromagnetic interference, guaranteeing the normal operation of the motor.​ Heat Dissipation Efficiency: Motors generate a significant amount of heat during operation. The 5052 aluminum plate, with its favorable heat - transfer properties (a by - product of its mechanical makeup), can rapidly absorb the heat generated by the motor and evenly distribute it across the cabinet surface. This allows for efficient heat dissipation through natural convection or with the assistance of cooling fans, effectively preventing overheating of the motor and extending its service life.   In the Field of Trailer Air Tanks​ Pressure Resistance: Trailer air tanks need to endure high - pressure compressed air. The 5052 aluminum plate, with its appropriate strength values shown in the mechanical property table, can safely bear the internal gas pressure without the risk of rupture or excessive deformation. This ensures the reliable storage and supply of compressed air for trailer braking systems, enhancing the safety of trailer operations.​ Corrosion Resistance: The compressed air in trailer air tanks may contain moisture and other corrosive substances. 5052 aluminum plate has inherent corrosion - resistant properties, which are crucial for maintaining the integrity of the air tank over an extended period. Even in harsh operating environments, the 5052 aluminum - made air tank can resist corrosion, reducing maintenance requirements and minimizing the risk of air leakage due to corrosion - induced damage.​ Lightweight Design: In the trailer industry, reducing weight is of great significance for improving fuel efficiency and transportation capacity. The relatively low - density 5052 aluminum plate, while still meeting the strength requirements for air tank construction, can effectively reduce the overall weight of the trailer. This not only saves fuel but also allows for increased payloads, making transportation more cost - effective. In the Field of Color - Coated Aluminum Plates for Camping RVs​ Aesthetic Appeal: 5052 aluminum plate can be processed into color - coated aluminum plates, which offer a wide range of colors and attractive finishes. For camping RVs, this provides an opportunity for owners to customize the appearance of their vehicles, creating a more visually appealing and unique look. Whether it's a vibrant color for a modern and eye - catching style or a more subdued, natural - looking finish, the color - coated 5052 aluminum plate can meet various aesthetic preferences.​ Structural Stability: The strength of 5052 aluminum plate ensures the structural stability of camping RVs. During travel on different terrains, RVs may encounter bumps and vibrations. The 5052 aluminum - based structure can withstand these mechanical stresses, providing a safe and stable living space for campers. It also supports the installation of various internal components and furniture, ensuring their secure placement.​ Weather Resistance: Camping RVs are often exposed to diverse weather conditions, including sunlight, rain, and wind. The 5052 aluminum plate, after appropriate surface treatment for color - coating, exhibits excellent weather resistance. It can resist the degradation caused by ultraviolet rays, preventing the color from fading over time. Additionally, it is resistant to corrosion from rainwater and other environmental factors, maintaining the integrity and appearance of the RV even after long - term outdoor use. If you are still unsure about which type of 5052 aluminum plate best suits your specific needs, our team of professional engineers is here to assist you. Please don't hesitate to contact us, and we will provide you with comprehensive and tailored advice.

In the vast world of materials, 5052 aluminum plate stands out as a remarkable and widely - used alloy. Have you ever wondered what makes this particular type of aluminum plate so special? Let's embark on a journey to explore the ins and outs of 5052 aluminum plate together. 5052 aluminum plate belongs to the al - mg alloy family, with magnesium being the primary alloying element. This composition endows it with a unique set of properties that make it a top choice in numerous industries. It is renowned as one of the most commonly used anti - rust aluminum materials.   What is 5052 aluminium plate?   It is a kind of aluminium alloy plate.The ‘5’ in 5052 aluminium plate stands for aluminium-magnesium alloy, and this alloy composition gives 5052 aluminium plate a lot of unique properties. It has good corrosion resistance, as if the aluminium plate put on a layer of strong protective clothing, in some corrosive environment of the use of scenarios, it can easily deal with it. For example, in the coastal areas of some building decoration or equipment shell, 5052 aluminium plate can well resist the corrosion of seawater and so on!   Strength of 5052 aluminium sheet It is not a flimsy material, it has a certain hardness and strength, and can maintain a good shape during processing, which can meet many applications that require a certain load-bearing capacity. Like some industrial small structural parts, if you need a certain strength and lightweight material, 5052 aluminium plate is very suitable.     Machinability of 5052 aluminium sheet   5052 aluminium sheet can be made into various shapes by cutting, bending, stamping and other processing methods. It's like a magic Lego block, highly malleable. Whether it is a complex shape or a simple geometric shape, it can be perfectly rendered under the operation of master craftsmen or advanced processing equipment. And it also has better welding properties, which is really convenient for some parts that need to be assembled!     5052 Aluminium plate surface characteristics   5052 aluminium plate has a smooth surface and uniform colour, if it is used for some products with high requirements on appearance, such as high-grade home decoration or exquisite electronic product shells, 5052 aluminium plate can add a lot of points to the whole product. It can be processed through different surface treatment methods, such as anodic oxidation, brushed, etc., presenting a variety of visual effects, to meet the diverse aesthetic needs of everyone!   In conclusion, 5052 aluminum plate has firmly established its position as a material of choice across diverse industries. Its excellent corrosion resistance ensures long - term durability even in harsh environments, making it a reliable option for outdoor applications. The remarkable formability allows manufacturers to shape it into intricate designs, meeting the demands of creative engineering. High strength - to - weight ratio not only contributes to energy - efficient products but also enables the construction of lightweight yet robust structures.   As technology continues to advance, the potential applications of 5052 aluminum plate are bound to expand further. Whether it's in the development of more fuel - efficient vehicles, the construction of sustainable buildings, or the innovation of high - performance electronic devices, this versatile alloy will undoubtedly play an increasingly significant role. We can look forward to seeing 5052 aluminum plate continue to drive progress and innovation in the world of materials engineering for years to come.      

  Comprehensive Guide to Hairline Finished Prepainted Aluminum Sheet   1. Introduction to Hairline Finished Prepainted Aluminum Sheet     Hairline finished prepainted aluminum sheet, also known as brushed prepainted aluminum, is a versatile material combining aesthetic appeal, durability, and functional performance. The hairline finish—characterized by fine, parallel microgrooves—imparts a modern, sophisticated look, while the preapplied coating enhances corrosion resistance, color consistency, and weatherability. This article explores its technical details, applications, and market relevance, supported by tabulated data. 2. Technical Specifications and Data 2.1 Physical Properties   Property Value Range Test Standard Thickness 0.3–3.0 mm ASTM B209 Tensile Strength 110–270 MPa ASTM E8 Elongation 2–12% ASTM E8 Density 2.7 g/cm³ ASTM B311 Coefficient of Thermal Expansion 23.6 µm/m·K ASTM E228 2.2 Coating Parameters   Coating Type Thickness Adhesion Test Gloss Level (60°) Polyester (PE) 20–25 µm ASTM D3359 10–30 GU Polyvinylidene Fluoride (PVDF) 25–35 µm ASTM D3359 5–20 GU Acrylic 15–20 µm ASTM D3359 20–40 GU 2.3 Surface Finish Characteristics   Finish Type Grit Size (Mesh) Line Density (Lines/mm) Ra Value (μm) Hairline (Fine) 800–1200 15–20 0.8–1.2 Hairline (Medium) 400–600 10–15 1.2–1.8 Hairline (Coarse) 180–240 5–8 1.8–2.5 3. Manufacturing Process

Why Prepainted Aluminum Foil Can Been Widely Used in The Food And Drug Packaging?   Prepainted aluminum foil is a type of aluminum foil product that has been pre-coated with a layer of paint or coating on its surface. This coating is applied through advanced coating technologies to achieve various colors, textures, and performance characteristics, enhancing the aesthetics and functionality of the aluminum foil.     Manufacturing Process   Base Material Preparation: High-quality aluminum ingots are first melted and cast into aluminum coils. These coils are then rolled through a series of rolling mills to achieve the desired thickness and width of the aluminum foil. The surface of the aluminum foil is carefully treated to ensure good adhesion of the paint.     Coating Application: The prepared aluminum foil is fed into a coating machine. In the machine, the paint or coating material, which can be in the form of liquid paint, powder coating, etc., is evenly sprayed or rolled onto the surface of the aluminum foil. The coating thickness can be precisely controlled according to specific product requirements.     Drying and Curing: After coating, the aluminum foil enters a drying and curing chamber. Through heating and other processes, the paint or coating is dried and cured to form a firm and durable coating film on the surface of the aluminum foil.       Properties and Advantages   Excellent Corrosion Resistance: The paint coating on the surface of the prepainted aluminum foil acts as a protective layer, effectively isolating the aluminum substrate from the outside environment and preventing corrosion caused by moisture, oxygen, and other substances. This greatly extends the service life of the aluminum foil.     Good Decorative Performance: It is available in a wide range of colors and finishes, such as matte, glossy, metallic luster, etc. It can meet different aesthetic needs in various applications and provide rich decorative effects.     High Weather Resistance: The prepainted aluminum foil has good resistance to sunlight, rain, snow, and other weather conditions. It can maintain its color and performance stability for a long time outdoors without fading, cracking, or peeling easily.     Easy Processing: The prepainted aluminum foil retains the excellent formability of aluminum foil. It can be easily cut, bent, stamped, and formed into various shapes, meeting the processing requirements of different products.     Good Chemical Resistance: It has a certain resistance to common chemicals, which makes it suitable for use in some environments where it may come into contact with chemicals.   Applications   Building Materials: In the construction industry, prepainted aluminum foil is widely used in curtain walls, roofing, wall panels, and decorative strips. Its beautiful appearance and excellent performance can enhance the overall quality and aesthetics of buildings.     Packaging Industry: It is used for packaging various products, such as food, medicine, cosmetics, etc. The prepainted aluminum foil not only provides good protection for the products but also improves the attractiveness of the packaging.     Electrical and Electronic Products: In the production of electrical and electronic products, prepainted aluminum foil is used for shielding, heat dissipation, and decorative purposes. For example, it can be used as a shielding material for cables or as a decorative shell for electronic devices.     Automotive Industry: It is applied to the interior and exterior decoration of automobiles, such as door panels, dashboard trim, and radiator grilles. The prepainted aluminum foil can improve the appearance quality and durability of automobiles.     Furniture Manufacturing: In furniture production, prepainted aluminum foil is used for decorative parts, such as table edges, cabinet doors, and drawer handles. It can add a modern and stylish touch to furniture.     In conclusion, prepainted aluminum foil is a versatile material with excellent performance and wide applications. It plays an important role in various fields and industries, bringing many benefits to product design and manufacturing.     Why prepainted aluminum foil can been widely used in the food and drug packaging?     Prepainted aluminum foil is widely used in the food and drug packaging industry due to its multiple advantages. The following presents these advantages in a table format along with some relevant data to attract clients in the food packaging industry:   Advantage Explanation Data/Example Excellent Barrier Properties Blocks light, oxygen, moisture, and odors, preserving the quality and freshness of food and drugs. Oxygen transmission rate: Can be as low as 0.01 - 0.03 cm³/m²/day (depending on thickness and coating), which is extremely low compared to other packaging materials like plastic films (which can have an oxygen transmission rate of 10 - 1000 cm³/m²/day). High Chemical Stability Food-grade coatings ensure no harmful substances are released into the packaged products. Complies with strict food safety standards such as FDA and EFSA regulations. For example, the migration of heavy metals like lead and cadmium is typically below 0.01 mg/kg in compliant prepainted aluminum foil. Good Mechanical Properties Strong and durable, resistant to tearing and puncturing, protecting the contents during handling and transportation. Tensile strength can range from 100 - 200 MPa for common aluminum alloys used in prepainted aluminum foil, much higher than many paper and plastic packaging materials. Aesthetics and Customization Allows for a wide range of colors and finishes, enhancing product appeal and brand recognition. Can achieve over 100 different standard colors, and special finishes like matte, glossy, or metallic effects are available to meet various brand requirements. Heat Resistance Can withstand high temperatures in processes like baking and sterilization, suitable for various food and drug processing methods. Can typically withstand temperatures up to 200 - 300°C without significant deformation or degradation of the coating, making it suitable for applications like oven cooking and medical device sterilization. Recyclability Environmentally friendly and easily recyclable, meeting the growing demand for sustainable packaging. Aluminum has a high recycling rate. In the United States, for example, the recycling rate of aluminum packaging is around 68%, and prepainted aluminum foil can be effectively recycled along with other aluminum materials.   These characteristics make prepainted aluminum foil an ideal choice for food and drug packaging, providing both functional and aesthetic benefits while ensuring product safety and compliance with industry standards.   How to ensure the safety of prepainted aluminum foil in food packaging? Ensuring the safety of prepainted aluminum foil in food packaging involves multiple aspects, from the selection of raw materials to quality control in the production process and compliance with regulations. The details are as follows: Raw Material Selection   Aluminum Foil Substrate: Choose high-purity aluminum foil with low impurity content to reduce the risk of harmful substances migrating into food. For example, aluminum foil with a purity of over 99% is often preferred, as it contains fewer impurities such as heavy metals like lead, cadmium, and mercury. Paint Selection: Select food-grade paints that comply with relevant safety standards. These paints should have low volatility, good chemical stability, and no harmful substances like formaldehyde, benzene, and heavy metal salts. It's better to choose water-based paints, which are more environmentally friendly and safer, or solvent-based paints that meet strict safety requirements. Production Process Control   Clean Production Environment: The production workshop should be kept clean and hygienic, equipped with dust removal, disinfection, and air purification facilities to prevent dust, microorganisms, and other contaminants from adhering to the aluminum foil and paint during production. Coating Process: Strictly control the coating process parameters, including coating thickness, drying temperature, and drying time. The coating thickness should be uniform to ensure good barrier and protection performance. The drying temperature and time should be adjusted according to the paint's characteristics to ensure complete curing of the paint and improve its adhesion and stability. Quality Inspection: Set up multiple quality inspection points in the production process to conduct inspections on the prepainted aluminum foil. Use testing equipment such as spectrometers to detect the content of harmful substances in the aluminum foil and paint, and use thickness gauges to measure the coating thickness to ensure that the products meet the standards. Compliance with Regulatory Requirements   Certification: Ensure that the prepainted aluminum foil and its production process comply with relevant national and international food safety regulations and standards, such as FDA regulations in the United States, EFSA standards in the European Union, and GB standards in China. Apply for corresponding certifications, such as food contact material safety certifications, to prove that the products meet safety requirements. Labeling: Clearly label the prepainted aluminum foil's product information, including the material composition, applicable food types, usage instructions, and shelf life, to guide users to use it correctly and ensure food safety. Storage and Transportation   Proper Storage: Store prepainted aluminum foil in a dry, ventilated, and clean warehouse to avoid exposure to moisture, sunlight, and chemical substances, which could affect its quality and safety. The storage temperature and humidity should be controlled within appropriate ranges, generally a temperature of 15 - 25°C and a relative humidity of 40% - 60%. Safe Transportation: During transportation, use clean, dry, and non-polluting transportation vehicles and containers to avoid contact between the prepainted aluminum foil and harmful substances. Protect the products from mechanical damage and ensure the integrity of the packaging to prevent contamination.           Pls contact us to know more about the prepainted aluminum foil.   Changzhou Dingang Metal Material Co.,Ltd www.cnchangsong.com / www.prepaintedaluminium.com Robert Tang ( Sales Director ) Email: robert@cnchangsong.com Phone: 0086 159 6120 6328 (whatsapp & wechat)

How to identify aluminum plate defects and provide solutions for improvement?   Defects in aluminum plates generally manifest in issues related to dimensional accuracy, shape, surface quality, and performance, among other factors. The following article will guide the reader in identifying these defects and provide solutions for improvement.   Classification of aluminum plate defects      Defects severely affecting usability - Penetrating porosity, inclusions, and overburn can result in non-compact microstructure and weaken grain-to-grain bonding, which can compromise the durability and performance of the product. - Corrosion, diffusion, white spots, delamination of aluminum layers, nitrate traces, and slip lines can compromise product corrosion resistance, affecting its durability and reliability. - Edge cracks, fissures, and shrinkage holes can undermine the overall product structure, potentially leading to product failure. - Mechanical properties and dimensional accuracy may not meet usage or standard requirements, affecting the product's performance and reliability. The following minor defects have slight impact on usability - Surface bubbles, ripples, scratches, emulsion marks, dents, pressure marks, imprints, adhesive marks, transverse waves, and peeling - Folding, non-metallic inclusions, metal inclusions, and loose dendritic patterns - Small black spots and abrasions     Aluminum Plate Shape Defect Analysis Unevenness Aluminum plates may exhibit uneven or wavy surfaces due to imperfections in their formation. This typically occurs along the rolling direction and is influenced by factors such as wave height, wave spacing, and the number of waves. Such defects can directly impact the usability of the plates. Additionally, uneven stretching of the plate in the transverse direction during rolling can lead to distortion and affect flatness if there is uneven temperature distribution in the transverse direction during subsequent processes.Quick QuoteEdge wavesEdge waviness in aluminum plates refers to the overall unevenness or waviness along the plate's edges. The plate's edges repeatedly exhibit waves, affecting usability.During rolling, the edges stretch more than the central part. Addressing these issues through adjustments such as enhancing cooling, adjusting the initial roller crown, and increasing roller deflection can effectively mitigate edge waves. Center waves Center waves refer to the unevenness or waviness present in the central portion of the plate. The central area of the aluminum plate exhibits waves, affecting its usability. During the rolling process, the central part stretches more than the edges. Addressing these issues through modifications to roller crown, enhancing cooling, and reducing roller deflection can effectively alter the central waves.   1/4 position waves (ribbed waves) The degree of unevenness or waviness near the edge of the aluminum plate, approximately 1/4 of the plate width in the transverse direction, affects usability.The combination of roller deformation caused by rolling and inappropriate roller crown, resulting in an increased stretch from the transverse edge to the central part.An effective combination of roller initial crown and control of cooling levels in different roller zones can lead to improvement.   An analysis of aluminum plate performance reveals unsatisfactory mechanical properties and waste resulting from exceeding standard mechanical properties at room temperature. The ingot's chemical composition does not meet technical standards, and the heat treatment process was not correctly executed. There are issues with the heat treatment equipment, the laboratory's heat treatment process, or testing methods, and sample specifications and surface quality do not meet requirements.   Overheating   When the casting block or aluminum plate reaches a temperature during heat treatment that equals or exceeds the eutectic temperature of the low-melting-point constituents, it can cause localized grain coarsening, the formation of liquid phase globules within the grains, and the appearance of triangular shapes at grain boundaries. This phenomenon disrupts the grain-to-grain bonding, leading to a decrease in overall performance, and such materials are considered absolute scrap or waste. Uneven temperatures in different zones of the furnace, malfunction of heat treatment equipment or instruments, unreasonable heating or heat treatment procedures, or inadequate execution, and improper loading placement are also factors that can contribute to this issue.Casting inclusions are another potential cause. These are block-shaped metal or non-metallic substances in the center of the aluminum plate, spanning its entire thickness, and disrupting the overall structure of the plate. This can be described as "During casting, the inclusion of metal or non-metallic substances resulted in this structural defect after rolling.     What to do if you receive the suppliers offer you with defects aluminum plate? For critical large orders, request samples from the aluminum plate supplier in advance for testing purposes. Dingang provides complimentary samples. Please define quality standards and problem-solving solutions in the contract to minimize quality risks. You may also inspect the goods at the factory after production. The factory is available for inspection at your convenience. If issues are discovered upon receipt, please check the quality certificate and contract terms to determine if you can hold the aluminum plate supplier responsible. You may also request that the supplier take responsibility for quality issues, providing cost compensation or reductions.Inspect the defective areas and assess whether salvage and repair are possible through methods like cutting or patching.If the defect area is extensive and cannot be repaired, consider annealing and re-rolling.Explore different processing methods to determine if crucial parts can be manufactured while avoiding the defective areas.If reuse is not feasible, consider selling the material as scrap at scrap metal prices. Maintain comprehensive records of all quality issues to inform future selection of an aluminum plate supplier.     Changzhou Dingang Metal Material Co.,Ltd has been a professional manufacturer and experienced exporter of new material,focuses on R&D,manufacturing,processing high-end roller-coating aluminium coil material products since 2002.   Welcome to enquiry us with your detailed spec requirements.   Robert Tang ( Sales Director ) Email: robert@cnchangsong.com Phone: 0086 159 6120 6328 (whatsapp & wechat) Website: www.prepaintedaluminium.com                www.cnchangsong.com