An accurate spectrographic method of analysis has been developed for the determination of the following elements in zinc-base die castings: aluminum 0.4-4.3%, copper 0.04-1.30%, cadmium 0.002-0.01%, magnesium 0.015-0.08%, tin 0.002-0.01%, lead0.002-0.01%, iron 0.015-0.10%. These specified ranges are appropriate for the analysis of zinc-base die castings meeting the requirements of Specification QQ-Z-363, Compositions A and B.
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