1.1 本规范涵盖五个等级的锌-5 % 铝-混合稀土（Zn-5 Al-MM）合金涂层钢丝绞线，由许多圆形钢丝组成，具有四种重量的Zn-5 Al-MM合金涂层，适用于拉线、信使、跨线和类似用途。该产品适用于需要耐腐蚀性和成型性的应用。 1.2 涵盖的五个等级如下: 1.2.1 公用事业 1.2.2 常见的 1.2.3 西门子马丁， 1.2.4 高强度，以及 1.2.5 超高强度， 1.2.6 各等级钢绞线的最小断裂强度见第节 7. . 1.3 涂层的四种重量分别为:1级和A、B、C级。第节介绍了Zn-5铝合金的最小重量 10 . 1.4 本规范适用于以英寸-磅为单位的订单（如 A855 )或可接受的国际单位制（如 A855M ). 英寸磅单位和国际单位不一定相等。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 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 five grades of zinc-5 % aluminum-mischmetal (Zn-5 Al-MM) alloy-coated, steel wire strand, composed of a number of round, steel wires, with four weights of Zn-5 Al-MM alloy coatings, suitable for use as guys, messengers, span wires, and for similar purposes. The product is intended for applications requiring corrosion resistance and formability. 1.2 The five grades covered are as follows: 1.2.1 Utilities, 1.2.2 Common, 1.2.3 Siemens-Martin, 1.2.4 High-strength, and 1.2.5 Extra high-strength, 1.2.6 Minimum breaking strengths of strand for each grade are described in Section 7 . 1.3 The four weights of coatings are: Class1 and Classes A, B, and C. Minimum weights of Zn-5 Al-MM alloy are described in Section 10 . 1.4 This specification is applicable to orders in either inch-pound units (as A855 ) or acceptable SI units (as A855M ). Inch-pound units and SI units are not necessarily equivalent. 1.5 This standard does not purport to address all of the safety concerns, 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. 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.