铝和铝合金。废料。第6部分：两种或多种可锻合金组成的废料。
Aluminium and aluminium alloys - scrap - Part 6: scrap consisting of two or more wrought alloys.
锻造合金具有良好的可锻性，在压力下会变形。
Wrought alloys possess good forgeability, it gives way to pressure.
阀杆材质是符合美国材料试验协会ASTM B 371标准抗失锌现象的硅青铜，或B 99低锌合金，不含石棉的填料，和可锻或球墨铸铁手轮。
Stems shall be of dezincification-resistant silicon bronze ASTM B 371 or low-zinc alloy B 99, non-asbestos packing and malleable or ductile iron handwheel.
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