Specification:
Aluminum Ingots grade A7 for re-melting, purity 99.7% minimum.
Elements value (percentages):
Aluminum (Al) min. 99.70
Silica (Si) max. 0.10
Iron (Fe) max. 0.20
Copper (Cu) max. 0.010
Zinc (Zn) max. 0.030
Gallium (Ga) max. 0.030
Magnesium (Mg) max. 0.02 Others each max. 0.030
Total of all impurities max. 0.30