1.1 本试验方法规定了用于规范目的的铜加速乙酸盐雾（CASS）试验所需的条件。本标准未规定用于特定产品的试样类型或暴露期，也未规定对结果的解释。 1.2 本试验方法适用于评估钢、锌合金、铝合金和设计用于恶劣环境的塑料上装饰性铜/镍/铬或镍/铬涂层的腐蚀性能。它也适用于阳极氧化铝的测试。本试验的适用性以及结果与使用经验的相关性应在规定用于本段所述以外的涂层系统或材料之前确定。 注1: 以下标准不是要求。它们仅供参考:实践 B537 和 E50 ，规格 B456 和 B604型 ，以及试验方法 B602 . 1.3 单位- 以国际单位制表示的数值应视为标准值。本标准不包括其他计量单位。 1.4 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。 有关更具体的安全预防信息，请参阅 8.1 . 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《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。 ====意义和用途====== 3.1 CASS测试被广泛应用，并可用于规范验收、模拟服务评估、制造控制和研发。它是专门为装饰、电沉积镍/铬和铜/镍/铬涂层而开发的。该试验的使用提高了电镀零件的质量，并导致开发了新的优质电镀工艺。

1.1 This test method prescribes the conditions required in copper-accelerated acetic acid-salt spray (CASS) testing for specification purposes. The standard does not specify the type of test specimen or exposure periods to be used for a specific product, nor the interpretation to be given to the results. 1.2 This test method is applicable to evaluating the corrosive performance of decorative copper/nickel/chromium or nickel/chromium coatings on steel, zinc alloys, aluminum alloys, and plastics designed for severe service. It is also applicable to the testing of anodized aluminum. The suitability of this test and correlation of results with service experience should be determined before it is specified for coating systems or materials other than those mentioned in this paragraph. Note 1: The following standards are not requirements. They are referenced for information only: Practices B537 and E50 , Specifications B456 and B604 , and Test Method B602 . 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 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. For more specific safety precautionary information see 8.1 . 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 ====== 3.1 The CASS test is widely employed and is useful for specification acceptance, simulated service evaluation, manufacturing control, and research and development. It was developed specifically for use with decorative, electrodeposited nickel/chromium and copper/nickel/chromium coatings. Use of the test has improved the quality of electroplated parts and led to the development of new and superior electroplating processes.