1.1 本规范涵盖了在正常环境至约750℃的温度下用于一般工程用途的珠光体可锻铸铁件 华氏度[400 °C]。 1.1.1 适用于温度高达1200的连续使用 华氏度[650 °C]，应纳入设计因素，以补偿可能的性能变化，如Marshall和Sommer所示 2. Pearson提供。 3. 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铁性能与用同一铁铸造的试棒性能之间的定量关系。 1.3 以国际单位或英寸-磅单位表示的数值应单独视为标准值。每个系统中规定的值可能不完全相等； 因此，每个系统应独立于其他系统使用。结合两个系统的值可能会导致不符合标准。 1.4 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。

1.1 This specification covers pearlitic malleable iron castings for general engineering usage at temperatures from normal ambient to approximately 750 °F [400 °C]. 1.1.1 For continuous service at temperatures up to 1200 °F [650 °C], design factors should be incorporated to compensate for possible property changes, as demonstrated by Marshall and Sommer 2 and by Pearson. 3 1.2 Without knowledge of casting geometry and process details, no quantitative relationship can 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 SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard. 1.4 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.