1.1本规程涵盖了铸造和锻造镁合金回火的指定系统。在B-7委员会管辖下的ASTM规范中，镁合金铸件和锻造产品的名称符合本惯例。

1.1 This practice covers a system for designating the tempers of magnesium alloys, cast and wrought. The designations used in ASTM specifications under the jurisdiction of Committee B-7 for magnesium alloy castings and wrought products, conform to this practice.