1.1 本规范涵盖电子应用用镀银圆形铜包钢线。 1.2 银涂层占涂覆线的总质量的质量百分比如下:1.25、2.5、4.0、6.1和8.0。 1.2.1 通过制造商和购买者之间的相互协议，可以获得具有不同的最小银质量百分比的镀银线。为了提供信息，以微英寸为单位的涂层厚度由中列出的质量百分比提供 1.2 显示在 表1 . 1.3 涵盖以下四类铜包钢丝:30HS类标称30%电导率硬拉、30A类标称30%电导率退火、40HS类标称40%电导率硬拉和40A类标称40%电导率退火。 1.4 以英寸表示的值-英镑单位应被视为标准单位。括号中给出的值是对SI单位的数学转换，仅供参考，不被视为标准。 1.4.1 例外- 在电阻率方面，SI单位被视为标准。 1.5 以下安全危害警告与本说明书中描述的试验方法有关。 本标准并不旨在解决与其使用相关的所有安全问题（如果有的话）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。( 警告- 选择溶剂清洁剂时应考虑毒性和可燃性。） 1.6 本国际标准是根据《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世界贸易组织技术性贸易壁垒委员会发布的建议。

1.1 This specification covers silver-coated, round, copper-clad steel wire for electronic application. 1.2 Silver coatings in mass percentages of the total mass of the coated wire are as follows: 1.25, 2.5, 4.0, 6.1, and 8.0. 1.2.1 Silver-coated wire having different minimum percentage of silver by mass may be obtained by mutual agreement between the manufacturer and the purchaser. For information purposes, the thickness of coating in microinches provided by the mass percentages listed in 1.2 is shown in Table 1 . 1.3 Four classes of copper-clad steel wire are covered as follows: Class 30HS nominal 30 % conductivity hard-drawn, Class 30A nominal 30 % conductivity annealed, Class 40HS nominal 40 % conductivity hard-drawn, and Class 40A nominal 40 % conductivity annealed. 1.4 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. 1.4.1 Exception— In resistivity the SI units are to be regarded as the standard. 1.5 The following safety hazards caveat pertains to the test method described in this specification. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. ( Warning— Consideration should be given to toxicity and flammability when selecting solvent cleaners.) 1.6 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.