1.1本规范涵盖了由无机铝粉填充的底漆和有机或无机面漆组成的耐腐蚀涂层的基本要求，具体取决于具体要求。 1.2根据具体要求，涂层可仅使用底漆，或使用兼容的有机聚合物或无机面漆涂覆顶部。 1.3底漆是一种水稀释浆料，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°C（450°F）的环境。 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°C（1200°F）的环境。 1.6这些涂层采用传统的浸渍/旋转、浸渍/排水或喷涂方法。 1.7涂层过程通常不会引起氢脆，前提是待涂层零件未经酸性清洁剂或预处理（见注释1）。 注1-尽管该涂层材料含有水，但其在抗拉强度等于或大于1000 MPa（约RC31）的钢零件中诱导氢脆的敏感性相对较低。必须遵守制备、除垢和清洁这些抗拉强度钢的正常预防措施。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。应避免酸或其他会放出氢的处理。 可以考虑采用机械清洗方法。一些钢比其他钢更容易发生氢脆，也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发生脆化，因此必须仔细考虑整个涂层工艺和使用的特定钢合金。 1.8本规范规定的涂层系统可适用于铁合金钢、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本规范第6节试验方法部分: 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和健康实践，并确定监管限制的适用性。

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 problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.