1 Chemical Composition

3003 aluminium alloy is based on aluminium, with manganese as the main alloying element. Its typical chemical composition (by weight percentage) is as follows:

• Aluminium (Al): 96.8% - 99.0%
• Manganese (Mn): 1.0% - 1.5%
• Copper (Cu): 0.05% - 0.20%
• Iron (Fe): ≤ 0.70%
• Silicon (Si): ≤ 0.60%
• Zinc (Zn): ≤ 0.10%
• Other elements (total): ≤ 0.15%

This composition endows the alloy with balanced mechanical properties and corrosion resistance.

2 Common Specifications

The specifications of 3003 Aluminium Circle are highly flexible to meet diverse application needs. Generally, the thickness ranges from 0.13 mm to 6.5 mm, and the diameter spans from 80 mm to 1000 mm. Customized specifications can also be provided according to specific project requirements, such as special thicknesses or diameters for precision components.

3 Mechanical Properties

The mechanical properties of 3003 Aluminium Circle vary significantly with different processing states (hardness levels). Two typical states are as follows:

• O State (Annealed): Tensile strength 90 MPa - 130 MPa; elongation ≥ 25%. Excellent ductility — suitable for deep drawing and complex forming processes.
• H14 State (Strain Hardened & Partially Annealed): Tensile strength 130 MPa - 180 MPa; elongation ≥ 5%. Higher strength — ideal for applications requiring better structural stability.