1.1 本规范涵盖了钢和铁合金上铅和铅锡合金电沉积涂层的要求。铅锡合金的涂层是锡含量在15质量以下的涂层 %. 涂层质量范围为3至15 % 锡含量也被称为“铅锡”金属电沉积。 1.2 本规范不适用于未预制形式的板材、带材或电线。 1.3 单位- 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 1.4 以下预防性警告仅适用于测试方法部分，第节 11 ，本规范: 本标准并不旨在解决与其使用相关的所有安全问题（如有）。 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，并确定监管限制的适用性。 1.5 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《国际标准、指南和建议制定原则决定》中确立的国际公认标准化原则制定的。 =====意义和用途====== 7.1 在希望获得耐大气腐蚀性的地方，在钢和铁合金上进行铅和铅锡合金的电沉积。铅和铅锡合金在钢上的沉积物已显示出在大气环境中具有优异的防腐性能，尤其是在低于- 被薄的铜（或镍）沉积物覆盖。铅和铅锡合金镀层的应用包括:防止稀硫酸腐蚀；盐水冷藏罐衬里；化学仪器；以及蓄电池部件；以及用于涂覆轴承表面。在最后一种应用中，铅是单独电镀的，或者是作为一种合金，并涂上另一种金属，例如铟。铟可以通过热处理扩散到铅或铅合金中。看见 附录X1 .

1.1 This specification covers the requirements for electrodeposited coatings of lead and lead-tin alloys on steel and ferrous alloys. The coatings of lead-tin alloys are those that range in tin content up to, but not exceeding, 15 mass %. The coatings ranging between 3 and 15 mass % in tin content are known also as “terne” metallic electrodeposits. 1.2 This specification does not apply to sheet, strip, or wire in the unfabricated form. 1.3 Units— The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.4 The following precautionary caveat pertains only to the test method portion, Section 11 , of this specification: 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. 1.5 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. ====== Significance And Use ====== 7.1 Electrodeposits of lead and lead-tin alloys on steel and ferrous alloys are produced where it is desired to obtain atmospheric corrosion resistance. Deposits of lead and lead-tin alloys on steel have shown to have excellent corrosion protective qualities in atmospheric exposure, especially when under-coated by a thin deposit of copper (or nickel). Applications of lead and lead-tin alloy deposits include the following: protection from dilute sulfuric acid; lining of brine refrigeration tanks; chemical apparatus; and parts for storage batteries; and for coating bearing surfaces. In this last application, lead is electroplated alone, or as an alloy and coated with another metal, such as indium. The indium may be diffused into the lead or lead alloy by heat treatment. See Appendix X1 .