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By certification 
3xxx Aluminum Sheet
3000 Series: 3003,3004,3005,3105,3a21,3104
3xxx Aluminum Sheet Features: Manganese as the main alloying elements of aluminum,
non-heat treatment to strengthen,corrosion resistance, good welding performance.
Good plasticity. (Close to super alloy).
Disadvantages: low strength, but can be hardened by cold work to strengthen the strength.
It is easy to produce coarse grains during annealing.
3xxx Aluminum Sheet Applications: aircraft used in the oil-based seamless tube (3003 alloy),
cans (3004 alloy).
Chemical composition
| chemical composition (%) | |||||||||||
| Si | Fe | Cu | Mn | Mg | Cr | Zn | other | Ti | Zi | Al | |
| 3003 | 0.6 | 0.7 | 0.05-0.2 | 1.0-1.5 | - | - | 0.1 | 0.15 | - | - | Remain |
| 3a21 | 0.6 | 0.7 | 0.2 | 1.0-1.6 | 0.05 | 0.1 | 0.1 | 0.15 | - | Remain | |
| 3004 | 0.3 | 0.7 | 0.25 | 1.0-1.5 | 0.8-1.3 | 0.25 | 0.15 | ||||
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