DC 3003 Aluminum Plate

DC 3003 aluminum plate is a variant of the widely used 3003 aluminum alloy, processed using direct chill (DC) castingto enhance its mechanical properties and surface quality. Here's a detailed breakdown:

1. Composition

• Base Alloy: 3003 is an Al-Mn alloy (1.0-1.5% manganese) with trace elements of silicon (≤0.6%), iron (≤0.7%), and copper (0.05-0.2%). This composition provides moderate strength, excellent corrosion resistance, and good weldability.

• DC Casting: The "DC" designation refers to the production method, where molten aluminum is cast into ingots using direct water cooling. This process reduces internal stress and improves dimensional stability compared to continuous casting (CC).

2. Mechanical Properties

• Temper: Common tempers include H14(cold-worked for moderate strength) and H112(hot-worked for structural applications). For example:

• H14: Tensile strength ≈ 22 ksi (152 MPa), yield strength ≈ 21 ksi (145 MPa), elongation ≈ 8%.

• H112: Slightly lower strength but higher ductility, suitable for applications requiring formability.

• Advantages Over CC Casting: DC-processed plates typically exhibit better flatness, surface finish, and uniformity, making them ideal for critical applications like battery casings and architectural components.

3. Applications

DC 3003 aluminum plate is versatile and widely used in:

• Automotive & Transportation: Fuel tanks, trailer roofing, and siding due to corrosion resistance in moist environments.

• Electronics: New energy battery cases (e.g., EV batteries) requiring lightweight and structural integrity.

• Construction: Exterior facades, gutters, and roofing due to its resistance to weathering.

• Industrial Equipment: Pressure vessels, heat exchangers, and chemical storage tanks.

• Consumer Goods: Cookware, refrigerators, and decorative items (e.g., anodized or color-coated finishes).

4. Manufacturing & Surface Finishes

• Processing: DC casting produces ingots that are hot-rolled into plates, followed by cold-rolling and tempering to achieve desired properties. Thicknesses range from 0.15 mm to 600 mm.

• Surface Treatments:

• Anodizing: Enhances corrosion resistance and aesthetic appeal for architectural use.

• Color Coating: Applied via roll-coating or fluorocarbon paint for interior/exterior decoration.

• Mill Finish: Standard smooth surface for general applications.

5. Suppliers & Availability

• China Suppliers: Leading manufacturers like Haomei Aluminumand Chal Aluminumproduce DC 3003 plates with widths up to 2650 mm and thicknesses up to 500 mm, catering to global markets.

• Global Reach: DC 3003 is widely available through distributors specializing in aluminum sheet metal, often with certifications like ISO 9001 and SGS.

6. Cost Considerations

• Price Range: In 2025, DC 3003 plates typically cost US $1.51–4.86 per kgon Alibaba, depending on thickness, temper, and surface treatment. Thicker plates or specialized finishes (e.g., anodized) command higher prices.

• Value Proposition: While DC casting adds moderate cost compared to CC, the improved mechanical properties and surface quality justify its use in high-performance applications.

7. Key Advantages

• Corrosion Resistance: Manganese content provides excellent resistance to atmospheric and marine environments.

• Formability: Good ductility allows deep drawing, stamping, and bending for complex shapes.

• Weldability: Easily welded using common techniques like MIG or TIG, making it suitable for structural assemblies.

• Lightweight: Density of ~2.73 g/cm³ (0.0986 lb/in³) reduces weight in transportation and aerospace applications.

8. Comparison with Other Alloys

• 3003 vs. 1100: DC 3003 offers 20% higher strengththan pure aluminum (1100) while retaining good formability.

• 3003 vs. 5052: 5052 (Al-Mg alloy) has higher strength but lower weldability and corrosion resistance, making 3003 preferable for chemical equipment and outdoor structures.

Conclusion

DC 3003 aluminum plate combines the inherent benefits of the 3003 alloy (corrosion resistance, formability) with the enhanced quality of DC casting. Its versatility makes it a top choice for industries demanding lightweight, durable, and cost-effective materials. Whether for battery casings, architectural facades, or industrial equipment, DC 3003 delivers reliable performance across diverse applications.

The Product Specification