ELEMENT SYMBOL SPECIFICATION (wL %)
Aluminum Al7 99.76≥ . %
Silicon Si ≤ 0.10%
Iron Fe ≤ 0.20%
Copper Cu ≤ 0.010%
Manganese Mn ≤ 0.010%
Magnesium Mg ≤ 0.010%
Zinc Zn ≤ 0.010%
Titanium Ti ≤ 0.020%
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