1.1 本指南专门针对线圈涂层金属建筑产品编写。 1.2 本指南适用于线路涂层和实验室涂层试板的制备、测试和评级，以比较和排序试板的耐腐蚀性和其他相关性能。 1.3 测试可能包括加速实验室腐蚀测试和室外暴露测试。 1.4 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。 1.5 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。 1.6 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====== 5.1 线圈涂层金属承受广泛的环境应力。切割边缘、损坏点和制造区域可能发生腐蚀，并导致过早失效。测试板的适当制备和评级产生了有意义的测试结果，允许在金属基材及其预处理之间以及涂层系统之间进行比较。 5.2 实验室制备的试板对受试基材和涂层系统进行了相对比较，但可能不会复制施加在制造部件上的所有应力。 建议对制造产品的结果进行验证。 5.3 实验室加速腐蚀试验有助于评估新的和现有金属涂层、预处理和油漆的相对性能。应由参与方就这些测试对实际使用的重要性达成一致。

1.1 This guide has been written specifically for coil-coated metal building products. 1.2 This guide applies to preparation, testing, and rating of line-coated and laboratory-coated test panels for the purpose of comparing and ranking the panels for corrosion resistance and other related properties. 1.3 Testing may include accelerated laboratory corrosion tests and outdoor exposure tests. 1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.5 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. 1.6 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 ====== 5.1 Coil-coated metals are subjected to a wide range of environmental stresses. Corrosion at cut edges, damage points, and fabricated areas can occur and lead to premature failure. Proper preparation and rating of test panels produces meaningful test results that allows comparisons between metal substrates and their pretreatments as well as between coating systems. 5.2 Laboratory-prepared test panels give a relative comparison of the substrates and coating systems under test, but may not duplicate all of the stresses imposed on manufactured components. Validation of results on a manufactured product is recommended. 5.3 Laboratory accelerated corrosion testing is useful in evaluating relative performance of new and existing metal coatings, pretreatments, and paints. It is up to the participating parties to agree on the significance of these tests to actual use.