1.1 本规范涵盖了两类商用质量的圆形和异形调质钢弹簧线，专门用于制造机械弹簧和线材。质量等级低于特种弹簧质量（规格 1000米/1000米 )或气门弹簧质量（规格 A230/A230M ). 1.2 以国际单位制或英寸-磅单位表示的值应单独视为标准值。每个系统中所述的值不一定是完全等效的；因此，每个系统都应独立使用。将两个系统的值结合起来可能会导致不符合标准。在文本中，英寸-磅单位显示在括号中。 1.3 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 two classes of commercial quality round and shaped quenched and tempered steel spring wire intended especially for the manufacture of mechanical springs and wire forms. The quality level is lower than specialty spring quality (Specification A1000/A1000M ) or valve spring quality (Specification A230/A230M ). 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system are not necessarily exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems can result in non-conformance with the standard. Within the text, the inch-pound units are shown in brackets. 1.3 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.