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:
| Product |
Aluminum Alloy 3003 Aluminum Alloy for Battery Shell (Square) | Thickness 0.6–1.2 mm | Customized Width | Clean Surface / No Oil | Excellent Impact Extrusion |
| Thickness | 0.01mm-2.5mm |
| Width | 600–1500mm |
| Materia | 3003 |
| Temper | O, H12, H14, H16, H18, H24, H26, H32, H34, etc |
| Inner Diameter | 405mm,505mm,150mm,etc. |
| Color | RAL, Pantone Color Or As Alient's Demand |
| Coating thickness | PVDF Paint Coating: Not Less Than 25um |
| PE Paint Coating : Not Less Than 18um | |
| Packing | Export Standard Wooden Pallets (Eye To Wall,Eye To Sky) |
| Payment Terms | L/C at sight or 30% T/T in advance as deposit, and 70% balance against the B/L copy. |
| MOQ | 1 Ton Per Specification |
| Delivery Time | Within 30 Days |
| Loading Port | Shanghai Port |
| Application |
Battery Shell (Square) |
Advantages
Core Benefits:
| Advantage | Detailed description |
|
Superior Deep-Drawing & Impact Extrusion |
High elongation → uniform wall thickness, minimal thinning. |
|
Clean Surface / No Oil |
No residue → direct use in high-purity battery assembly lines. |
|
High Strength-to-Weight Ratio |
Yield 145–195 MPa → rigid shells with thinner gauges. |
|
Excellent Corrosion Resistance |
Good performance in battery electrolyte & humid environments. |
|
Significant Weight Reduction |
1.0 mm ≈ 2.7 kg/m² vs 1.0 mm steel ≈ 7.85 kg/m² → ~66% lighter. |
|
Outstanding Weldability |
Easy laser/MIG welding for module assembly. |
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
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.