1.1本试验方法涵盖厚度在3.18至19.1 mm（0.125至0.750 in.）之间的铁素体钢的落锤撕裂试验（DWTT）。 1.2以国际单位制（公制）表示的数值应视为标准。 1.3本标准无意解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。

1.1 This test method covers drop-weight tear tests (DWTT) on ferritic steels with thicknesses between 3.18 and 19.1 mm (0.125 and 0.750 in.). 1.2 The values stated in SI (metric) units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.