1.1本试验方法包括评估适用于挤压铝基材的透明保护涂层的砂浆和耐酸性。 1.2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。 1.3 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。 ====意义和用途====== 本试验方法将区分耐酸性和电机电阻的涂层类型，前提是涂层是在具有指定膜厚的均匀连续膜中涂覆的。

1.1 This test method covers the evaluation of the mortar and acid resistance of clear protective coating factory applied to extruded aluminum substrates. 1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== This test method will provide differentiation between types of coatings for acid and motor resistance providing the coating is applied in a uniform continuous film with a specified film thickness.