Die Casting Aluminum Alloy

1.Die casting aluminum alloy designation

GB/T 15115-20099 中铝合金的命名规则：两个首字母“Y”“L”代表“压”“铝”两个汉字，表示压铸铝合金，YL后的第一个数字1/2/3/4分别表示：Al-Si，Al-Cu，Al-Mg，Al-Sn系列合金。第二/第三数字为顺序号。

ASTM B 179-06中铝合金命名规则：The first three numbers indicate the alloy, and the fourth indicates the product form.

The first digit identifies the family.

The second and third digits identify a specific alloy of the family. For all except the 1xx.x series, there is no special significance to those numbers.

The final digit following the decimal indicates the product form-casting or ingot. If the designation applies to a finished casting, a zero always is used (xxx.0); if it applies to the ingot from which the casting was or will be produced, a 1 or 2 is used (xxx.1 or xxx.2).

Prefix letters such as A or B indicate variations in the composition of casting alloys, but overall similarity. Continuing the example above, alloy A356.0 indicates a variation of 356.0 alloy, but with tighter controls on iron and other impurities.

Commercial die castings are generally limited to a relatively small number of compositions, namely, 360.0, A360.0, 380.0, A380.0, 383.0, 384.0, A384.0,
B390.0, 413.0, C443.0, and 518.0.