1.1 本规范涵盖电子应用用裸圆包铜钢丝。 1.2 铜包钢线分为四类: 1.2.1 30HS级- 标称30 % 导电性高强度冷拔， 1.2.2 30HS-A级- 标称30 % 导电性高强度退火， 1.2.3 40HS级- 标称40 % 导电性高强度冷拔，以及 1.2.4 40HS-A级- 标称40 % 导电性高强度退火。 1.3 以英寸-磅为单位的数值应视为标准值。括号中的数值采用国际单位制。 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 bare round copper-clad steel wire for electronic application. 1.2 Four classes of copper-clad steel wire are covered as follows: 1.2.1 Class 30HS— Nominal 30 % conductivity high-strength hard-drawn, 1.2.2 Class 30HS-A— Nominal 30 % conductivity high-strength annealed, 1.2.3 Class 40HS— Nominal 40 % conductivity high-strength hard-drawn, and 1.2.4 Class 40HS-A— Nominal 40 % conductivity high-strength annealed. 1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are in SI units. 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.