1.1 根据具体要求，本规范涵盖了由无机铝颗粒填充底漆和有机或无机面漆组成的防腐涂层的基本要求。 1.2 根据具体要求，涂层可仅使用底涂层，或顶部使用兼容的有机聚合物或无机顶涂层。 1.3 底漆是一种水可稀释的浆料，含有分散在铬酸盐/磷酸盐化合物液体粘合剂中的铝颗粒。 1.4 有机面漆由聚合物树脂和分散颜料组成，适用于温度不超过230℃的环境 °C（450 °F）。 1.5 无机面漆由分散在铬酸盐/磷酸盐化合物液体粘合剂中的陶瓷氧化物颜料组成，适用于温度不超过645℃的环境 °C（1200 °F）。 1.6 这些涂层通过传统的浸渍/旋转、浸渍/排水或喷涂方法涂覆。 1.7 涂层工艺通常不会导致氢脆，前提是要涂层的零件未经过酸洗或预处理（参见 注1 ). 注1: 尽管该涂层材料含有水，但其对在抗拉强度等于或大于1000MPa（约RC31）的钢部件中引起氢脆的敏感性相对较低。 必须遵守这些抗拉强度钢的制备、除垢和清洗的常规预防措施。在进行任何化学处理或清洁操作之前，应考虑进行初始应力消除处理。应避免酸或其他释放氢气的处理。可考虑采用机械清洁方法。一些钢比其他钢更易发生氢脆，并且可能需要在清洁后但在涂层之前进行氢脆消除烘烤。由于任何工艺都不能完全保证不脆化，因此必须仔细考虑整个涂层工艺和所用的特定钢合金。 1.8 本规范规定的涂层系统可应用于铁合金钢、铝、铁素体和奥氏体不锈钢。 1.9 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.10 以下安全隐患警告仅适用于测试方法部分，第节 6. ，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。 1.11 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。

1.1 This specification covers the basic requirements for a corrosion-resistant coating consisting of an inorganic aluminum particle-filled basecoat and an organic or inorganic topcoat, depending on the specific requirements. 1.2 The coating may be specified with basecoat only, or with the top coated with compatible organic polymer or inorganic topcoats, depending on the specific requirements. 1.3 The basecoat is a water-dilutable slurry containing aluminum particles dispersed in a liquid binder of chromate/phosphate compounds. 1.4 The organic topcoats consist of polymer resins and dispersed pigments and are for service where temperatures do not exceed 230 °C (450 °F). 1.5 The inorganic topcoats consist of ceramic oxide pigments dispersed in a liquid binder of chromate/phosphate compounds and are for service where temperatures do not exceed 645 °C (1200 °F). 1.6 These coatings are applied by conventional dip/spin, dip/drain, or spray methods. 1.7 The coating process does not normally induce hydrogen embrittlement, provided that the parts to be coated have not been subjected to an acid cleaner or pretreatment (see Note 1 ). Note 1: Although this coating material contains water, it has a relatively low susceptibility to inducing hydrogen embrittlement in steel parts of tensile strengths equal to or greater than 1000 MPa (approximately RC31). Normal precautions for preparing, descaling, and cleaning steels of these tensile strengths must be observed. An initial stress relief treatment should be considered prior to any chemical treatment or cleaning operation. Acids or other treatments that evolve hydrogen should be avoided. Mechanical cleaning methods may be considered. Some steels are more susceptible to hydrogen embrittlement than others and may also require hydrogen embrittlement relief baking after cleaning but before coating. Since no process can completely guarantee freedom from embrittlement, careful consideration must be given to the entire coating process and the specific steel alloy employed. 1.8 The coating systems defined by this specification can be applied to ferrous alloy steels, aluminum, and ferritic and austenitic stainless steels. 1.9 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.10 The following safety hazards caveat pertains only to the test methods portion, Section 6 , 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. 1.11 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.