1.1 本规程旨在帮助进行户外暴露时遵循的程序，以评估可能发生在覆盖有已损坏有机涂层的钢板上的表面腐蚀。所述室外暴露基于实践 第7页 和 50克 并包括用盐溶液定期润湿试样。 1.2 制备试样的方法和材料的特殊暴露要求超出了本规程的范围。 1.3 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。 1.4 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====== 3.1 本规程中所述类型的试验用于评估暴露于高盐环境的金属产品上的有机涂层的耐腐蚀性，如受除冰盐影响的区域或沿海区域。 暴露条件复杂多变。重要因素包括气候、一年中的时间、污染的存在等。通常，如果不是不可能的话，很难准确定义或测量影响退化的所有因素。需要在不同季节和至少两年的时间内重复暴露测试，以获得任何给定地点的代表性结果。

1.1 This practice is designed to assist procedures to be followed when conducting outdoor exposures to evaluate cosmetic corrosion that might occur in steel panels covered with an organic coating that has been damaged. The outdoor exposures described are based on Practices G7 and G50 and include periodic wetting of the test specimens with a salt solution. 1.2 The methods of preparing test specimens and the particular exposure requirements of materials are beyond the scope of this practice. 1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 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. 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 Tests of the type described in this practice are used to evaluate the corrosion resistance of organic coatings on metal products exposed to highly salty environments, such as areas subjected to deicing salts or coastal areas. Exposure conditions are complex and changeable. Important factors include climate, time of year, presence of pollution, and so forth. Generally it is difficult, if not impossible, to define or measure precisely all the factors that influence degradation. Repeated exposure testing during different seasons and over a period of at least two years is required to obtain results representative of any given location.