Here the code for cast alloy aluminum :
* 1 x x x for Al pure(>99%)
* 2 x x x for Al-Cu
* 3 x x x for Al-Si + Cu/Mg
* 4 x x x for Al-Si
* 5 x x x for Al-Mg
* 7 x x x for Al-Zn
* 8 x x x for Al-Sn
* 9 x x x for Al+another metal
Heat treatable : Al-Cu, Al-Si+Cu/Mg; Al-Si, Al-Zn
Non heat treatable : Al-Mg, Al-Sn
Here the code for wrought alloy aluminum :
* 1 x x x for Al pure (>99%)
* 2 x x x for Al-Cu
* 3 x x x for Al-Mn
* 4 x x x for Al-Si
* 5 x x x for Al-Mg
* 6 x x x for Al-Mg-Si
* 7 x x x for Al-Zn
* 8 x x x for Al+another metal
Heat treatable : Al-Cu, Al-Si, Al-Mg-Si, Al-Zn
Non heat treatable : Al-Mn, Al-Mg
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