1.1本规范涵盖热轧高强度低合金钢板，其在轧制状态下具有改进的缺口韧性。 1.2可用的最大厚度为2 1/2英寸。[65毫米]。 1.3当焊接钢材时，先决条件是使用适合钢材等级和预期用途或服务的焊接工艺。有关可焊性的信息，请参阅规范A6/A6M的附录X3。 1.4以英寸-磅单位或国际单位制表示的数值应视为标准值。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效值。因此，每个系统必须相互独立使用。合并两个系统的值可能会导致不符合本规范。

1.1 This specification covers hot-rolled, high-strength, low-alloy steel plate with improved notch toughness in the as-rolled condition. 1.2 The maximum thickness available is 2 1/2 in. [65 mm]. 1.3 When the steel is to be welded, it is presupposed that a welding procedure suitable for the grade of steel and intended use or service will be utilized. See Appendix X3 of Specification A6/A6M for information on weldability. 1.4 The values stated in either inch-pound units or SI units are to be regarded 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 must be used independently of the other. Combining values from the two systems may result in nonconformance with this specification.