Aluminum Alloy 3003 Aluminum Alloy for Battery Shell (Square) | Thickness 0.6–1.2 mm | Customized Width | Clean Surface / No Oil | Excellent Impact Extrusion

Introduction                                                

The 0.6–1.2 mm 3003 aluminum sheet (clean surface, no oil, impact extrusion grade) is currently the most widely adopted alloy worldwide for square (prismatic) battery shells, EV battery enclosures, energy storage system (ESS) modules and structural battery trays.

Compared to 1050/1060 (softer) or 5052/5083 (stronger but more expensive), 3003 delivers the optimal balance for modern battery shell manufacturing:

Mn alloying (1.0–1.5%) → 20–30% higher strength & better dent resistance than pure aluminum

Exceptional deep-drawing & impact extrusion performance → uniform wall thickness, minimal thinning

Clean surface / no oil → direct use in high-purity battery production lines

Lightweight yet rigid → reduces overall battery pack weight while maintaining structural integrity

Key technical features:Temper: O / H12 / H14 / H16 (optimized for impact extrusion & deep drawing),Surface: mill finish, degreased, no rolling oil residue,Formability: excellent elongation & low earing for square shell stamping,Corrosion resistance: very good in battery electrolyte environments after surface treatment

Product Parameters:                                                  

Advantages

Core Benefits:

Case Studies  

1.BYD Blade Battery Square Shells (China & Global Export)

Thickness: 0.8–1.0 mm 3003 impact extrusion grade

Result: uniform wall thickness, excellent structural integrity, millions of units produced

2.CATL Prismatic Cell Enclosures (Global Supply Chain)

Thickness: 1.0–1.2 mm 3003 clean-surface sheet

Result: high deep-draw yield, no oil residue contamination, passed stringent battery safety tests

3.Tesla Structural Battery Pack Components (North America & Europe)

Thickness: 0.7–1.0 mm 3003 for module trays

Result: significant weight saving, superior weldability, enhanced crash performance

4.LG Energy Solution Square Battery Shells (Korea & North America)

Thickness: 0.6–0.9 mm 3003 impact extrusion grade

Result: excellent corrosion resistance in electrolyte environment, high production efficiency

5.Contemporary Amperex Technology (CATL) ESS Module Casings

Thickness: 1.2 mm 3003 clean sheet

Result: rigid structure for large-scale energy storage, 30-year design life forecast

International Applications

EV prismatic battery shells:square lithium-ion cells for passenger cars & commercial vehicles

Energy storage system (ESS) modules:grid-scale & home battery enclosures

Power battery packs:structural trays & module casings

Specialty battery applications:e-bikes, drones, marine & stationary storage

OEM & tier-1 suppliers:direct supply to cell manufacturers & pack integrators

Mega Trends

Thinner high-strength gauges:0.4–0.8 mm 3003/3004 for next-gen lightweight EV packs

Surface optimization:ultra-clean / no-oil + anti-corrosion pre-treatment standard

Impact extrusion + deep drawing hybrid:for complex structural battery trays

95%+ recycled content:traceable 3003 sheets with blockchain CO₂ passport

Smart battery shells:conductive coating + embedded sensors for thermal/structural monitoring

Extreme safety:40-year warranty & enhanced crash performance for next-gen solid-state batteries

Upcoming Applications

Solid-state battery structural enclosures

Flying taxi & eVTOL battery casings

Lunar/Mars rover power system shells

Autonomous vehicle modular battery packs

FAQ (USA/Europe/Middle East/Asia Buyers)

Q1: Why choose 3003 over 1050/1060 or 5052 for square battery shells?

A: 3003 provides 20–30% higher strength & better dent resistance than 1050/1060 while remaining much lower cost & easier to deep-draw/impact extrude than 5052. It is the industry sweet spot for most prismatic & structural battery enclosures.

Q2: How clean is the “no oil” surface & is it suitable for high-purity battery lines?

A: Degreased & residue-free (rolling oil < 0.01 mg/m²). Meets strict battery assembly cleanliness requirements. We provide surface cleanliness test reports (ASTM D4940 equivalent).

Q3: Can the sheet be impact extruded or deep-drawn for square battery shells without cracking?

A: Yes — 3003 is optimized for impact extrusion & deep drawing. Low earing & uniform grain structure ensure high yield. Forming limit diagrams (FLD) & trial shells available.

Q4: Minimum order quantity & lead time for custom width or temper?

A: MOQ 3–5 tons (depending on width/thickness); standard specifications 15–25 days; custom width or temper 25–35 days. Sample sheets/coils free with freight collect.

Q5: How does 3003 perform in battery electrolyte & long-term humid environments?

A: Excellent — good resistance to typical lithium-ion electrolytes after proper surface treatment. Humidity chamber & electrolyte immersion test data available.

Q6: Is 3003 suitable for structural battery trays & module casings?

A: Yes — higher rigidity than 1xxx series allows thinner gauges for weight-critical structural components. Weldability & crash performance data provided.

Call to Action                                                                                                        

Want battery shells that combine lightweight design, superior formability & long-term reliability?

Contact us to learn about 1.0 mm clean-surface sample + deep-draw & impact extrusion test report + real EV battery project reference package

24-hour rapid quote

Contact Dingang immediately — power the future with smarter aluminum battery enclosures!

T: 0086 13961220663 

E:gavin@cnchangsong.com