1.1 本规范涵盖冲天炉工艺铸件用可锻铸铁。 1.2 在不了解铸件几何形状和工艺细节的情况下，无法说明铸件不同位置的铸铁性能与由同一铸铁铸造的试棒性能之间的定量关系。 1.3 以英寸-磅单位或国际单位表示的数值应单独视为标准值。在文本中，国际单位显示在括号中。每个系统中规定的值不是精确的等价物；因此，每个系统应相互独立使用。 合并两个系统的值可能会导致不符合规范。

1.1 This specification covers malleable irons for castings made by the cupola process. 1.2 Without knowledge of casting geometry and process details, quantitative relationships cannot be stated between the properties of the iron in the various locations of a casting and those of a test bar cast from the same iron. 1.3 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.