3003 aluminum narrow strips are precision-slit aluminum coils made from the 3003 Al-Mn (aluminum-manganese) alloy. Belonging to the 3xxx series, this non-heat-treatable alloy is highly valued for its excellent formability, good corrosion resistance, and stable physical performance at moderately elevated temperatures.
Today, as the new energy vehicle (EV) industry grows, 3003 aluminum narrow strips have become a standard material for battery structural components. They are widely used to manufacture blade battery battens, cell supports, and solid-state battery housings.
These strips are produced through a strict cold rolling process, followed by precision slitting. This ensures that the material has a consistent thickness, extremely smooth and burr-free edges, and stable mechanical properties, which are critical for safe and continuous battery manufacturing.
Why EV Battery Cases Use 3003 Aluminum
When engineers design EV battery cases and structural frames, they need a metal that is lightweight, safe, and easy to mass-produce. 3003 aluminum is frequently chosen as the primary EV battery material for several practical reasons:
Excellent Stamping Performance: Battery cases often require complex forming. 3003 aluminum handles deep drawing, bending, and shaping easily without cracking or losing its structural integrity.
Good Corrosion Resistance: Batteries contain active electrolytes and are exposed to varying weather conditions. 3003 aluminum naturally resists rust and corrosion, ensuring long-term safety and stability in humid environments.
Stable Temperature Performance: EV batteries generate heat during charging and discharging. 3003 aluminum maintains its strength and shape under typical battery operating temperatures.
Lightweight Advantage: Reducing the weight of the battery pack increases the driving range of the electric vehicle. 3003 aluminum has a much lower density than steel, making it ideal for lightweight designs.
Cost-Effective: Compared to higher-alloy materials or copper, the 3003 aluminum alloy provides a perfect balance of processability, high durability, and lower raw material costs.
3003 Aluminum Narrow Strips Specifications
If you plan to buy custom 3003 aluminum strip for your manufacturing line, matching the exact specifications is the first step. Below are the standard data ranges we supply.
Size Range
We offer flexible size options to fit different battery cell designs and stamping machines.
| Parameter | Standard Range |
| Thickness | 0.2 – 6.0 mm |
| Width | 10 – 600 mm (narrow strip) |
| Length | Supplied in coil or cut-to-length |
| Available Tempers | O, H14, H18, H24 |
3003 Aluminum Chemical Composition
The addition of 1.0% to 1.5% manganese increases the strength of this alloy by about 20% compared to pure 1100 series aluminum, without sacrificing workability.
| Element | Content (%) |
| Aluminum (Al) | Balance |
| Manganese (Mn) | 1.0 – 1.5 |
| Silicon (Si) | ≤ 0.60 |
| Iron (Fe) | ≤ 0.70 |
| Copper (Cu) | 0.05 – 0.20 |
| Zinc (Zn) | ≤ 0.10 |
| Others | ≤ 0.15 |
Mechanical Properties Of 3003 Aluminum Narrow Strips
The temper you choose decides how hard and strong the metal is. The "O" temper is fully soft for maximum drawing, while "H" tempers are harder.
| Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
| O (Annealed) | 95 – 135 | ≥ 35 | ≥ 20 |
| H14 (Half Hard) | 120 – 160 | ≥ 95 | ≥ 8 |
| H24 (Half Hard) | 140 – 180 | ≥ 115 | ≥ 6 |
3003 Aluminum Narrow Strips Physical Properties
These physical properties are essential for engineers designing the thermal management and electrical safety of battery packs.
| Property | Typical Value |
| Density | 2.73 g/cm³ |
| Thermal Conductivity | ~160 W/m·K |
| Electrical Conductivity | ~40% IACS |
| Melting Range | 643 – 654°C |
Are you looking for a reliable EV battery materials supplier? GNEE manufactures precision 3003 aluminum narrow strips with custom widths and tight tolerances. Contact Our Sales Team Today for a free sample and a competitive wholesale quote for your factory.
Get a Quote in 24 HoursCommon Applications of 3003 Aluminum Narrow Strips
3003 aluminum narrow strips are used daily in factories worldwide. They are highly valued in the new energy sector and other industrial fields where stable metal stamping is required.
Blade Battery Applications
Blade Battery Battens: Used to hold and secure the long, blade-like battery cells in place.
Cell Support Structures: Internal frames that prevent the battery cells from shifting during vehicle movement.
Housing Reinforcement Parts: Stamped brackets that add physical strength to the outer battery pack casing.
Solid-State Battery Applications
Battery Casing Components: Deep-drawn shells that protect the solid-state materials from external damage.
Structural Frames: Lightweight aluminum borders that group multiple solid-state cells together.
Thermal Management Parts: Because 3003 aluminum conducts heat well, it is used to make heat-dissipating plates inside the battery pack.
Other Industrial Uses
Heat Exchangers: Used to make fins and tubes for automotive radiators and air conditioning units.
General Stamping Parts: Everyday hardware, enclosures, and brackets.
Decorative Panels and Roofing: Used in building materials due to its excellent rust resistance.
Key Advantages for Battery Manufacturing
Why do purchasing managers prefer precision slit aluminum coils over standard sheets? Here are the main benefits for production lines:
| Feature | Production Benefit |
| Excellent Formability | Enables complex and safe battery structure designs without material failure. |
| Corrosion Resistance | Extends the functional life and safety of the battery pack. |
| Stable Mechanics | Ensures the stamped parts do not warp, maintaining structural safety. |
| Smooth Surface Quality | Suitable for high-precision robotic manufacturing and laser welding. |
| Narrow Strip Format | Feeds directly into stamping machines, greatly reducing material waste. |
GNEE Manufacturing Capability
As an experienced wholesale aluminum strip manufacturer in China, GNEE understands the strict quality demands of the EV industry. We supply global clients with high-quality materials supported by advanced technology:
Advanced Equipment: We use modern cold rolling and precision slitting lines to ensure perfectly straight strips.
Tight Tolerances: We control thickness and width tolerances strictly to prevent jamming in your automated stamping machines.
Clean and Safe: Our strips feature clean surfaces and burr-free edges, which is critical to preventing short circuits in battery assembly.
Custom Widths: We slit the coils to your exact width requirements, from 10 mm up to 600 mm.
Stable Supply: With large production capacity, we offer a steady supply chain for the fast-growing global EV market.
Quality Standards & Certifications
Safety is the top priority in battery manufacturing. All GNEE 3003 aluminum products comply with international standards:
- ASTM B209 (Standard Specification for Aluminum)
EN 485 (European standard for sheet, strip, and plate)
GB/T 3880 (Chinese national standard)
ISO 9001 Quality Management System
Upon request, we provide a full Mill Test Certificate (MTC) with every shipment. Third-party inspections from SGS or BV are also fully supported to ensure your peace of mind.
Packaging and Delivery
Aluminum coils can be damaged by moisture or rough handling during ocean shipping. GNEE uses heavy-duty, export-standard packaging to protect your investment:
Moisture Protection: Every coil is tightly wrapped in waterproof plastic film and anti-rust kraft paper, with desiccants placed inside.
Physical Protection: Edge protectors are applied to prevent the slit edges from bending or denting.
Wooden Pallets: The coils are securely strapped to strong, fumigated wooden pallets. We support both "Eye-to-Sky" and "Eye-to-Wall" packaging methods depending on your factory's unloading equipment.
Delivery Time: Typical production and delivery times range from 20 to 30 days, ensuring your production line never stops.
How to Choose the Right 3003 Narrow Strip
Before you place an order, consider these simple rules to ensure you get the right material:
Forming Process: If you are doing deep drawing (like making a deep battery cup), choose the fully soft "O" temper. If you are making flat brackets, "H14" or "H24" offers better strength.
Thickness Precision: Ensure your stamping machine can handle the thickness tolerance. Let us know if you need ultra-high precision.
Surface Cleanliness: Battery parts require a grease-free surface. Specify if you need the material thoroughly degreased.
Width: Order the exact width needed for your molds to minimize scrap metal waste.
Ready to optimize your battery manufacturing process? As a trusted partner for the new energy sector, GNEE supplies premium 3003 aluminum slit coils to factories worldwide. Send Us Your Inquiry Now to discuss your technical requirements and get the latest market prices.
Reference Price Range (FOB China)
| Product | Thickness | Width | Temper | FOB Price (USD/Ton) |
|---|---|---|---|---|
| 3003 Narrow Strip | 0.2 – 1.0 mm | 10 – 200 mm | O / H14 | 2,400 – 2,900 |
| 3003 Narrow Strip | 1.0 – 3.0 mm | 50 – 400 mm | H14 / H24 | 2,350 – 2,850 |
| 3003 Narrow Strip | 3.0 – 6.0 mm | 100 – 600 mm | H24 | 2,300 – 2,800 |
Request a Quote
To help us provide you with the fastest and most accurate quotation, please include the following details in your email:
- Dimensions: Exact Thickness and Width
Temper: (e.g., O, H14, H24)
Quantity: Coil weight or total order volume (Tons)
Application: Briefly let us know what battery part you are making (e.g., blade battery batten, solid-state battery case).
The GNEE global sales team will review your request and respond within 24 hours with professional pricing and technical recommendations. Partner with us for reliable, high-quality aluminum supply.
