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1.1 ,This test method determines the concentrations of trace metallic impurities in high purity (99.99 wt. % pure, or purer, with respect to metallic trace impurities) aluminum-copper, aluminum-silicon and aluminum-copper-silicon alloys with major alloy constituents as follows:
| , | aluminum | Greater than 95.0 ,% |
| , | copper | Less or equal than 5.0 ,% |
| , | silicon | Less or equal than 5.0 ,% |