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| Aluminum alloy number |
Number Main alloying element and characteristic
1*** Al(More than 99%) ： moderately low strength, excellent workability,
weldability and corrosion resistance.
2*** Al –Cu alloy： high strength, heat-treatable alloy, with good workability.
3*** Al –Mn alloy： good formability, weldability, and corrosion resistance.
4*** Al –Si alloy：The melting point is low,Forms the dark ash to the
charcoal color oxide film.
5*** Al –Mg alloy： standard alloy of mid strength, good corrosion resistance,
workability, weldability.
6*** Al –Mg-Si alloy： good corrosion resistance, rivet joint structural material.
7*** Al –Zn alloy： the strongest aluminium alloy.
8*** Contain the aluminium alloy of other elements.
9*** Serial number of reserve new alloy.
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