1.1 本规范涵盖了现有锻造合金工具钢产品的化学、机械和物理要求。 1.2 这些产品，包括热加工或冷加工的棒材、板材、板材、带材、棒材、线材或锻件，通常被制造成工具、模具或夹具。特定应用的材料选择将取决于设计、使用条件和所需性能。 1.3 以英寸磅为单位的数值应视为标准。 括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 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》中确立的国际公认的标准化原则制定的。

1.1 This specification covers the chemical, mechanical, and physical requirements for available wrought alloy tool steel products. 1.2 These products, which include hot or cold finished bar, plate, sheet, strip, rod, wire, or forgings, are normally fabricated into tools, dies, or fixtures. The selection of a material for a particular application will depend upon design, service conditions, and desired properties. 1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered 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.