1.1 本规程涵盖了氯化钠浸泡试验的程序 + 过氧化氢溶液。它主要用于锻造热处理铝合金（2XXX和7XXX）的测试，但也可用于其他铝合金，包括铸件。它规定了试样制备程序、试验环境条件和控制方法。 1.2 本规程适用于合金开发期间的评估和生产评估，可作为同一材料连续批次质量的控制测试（见MIL- H-6088和美国联邦试验方法标准151b）。因此，规定了严格的测试条件，以最大限度地保证测试结果的差异是由于所测试材料的批次差异造成的。 注1: 本规程不涉及采样、解释或结果的重要性。 1.3 以国际单位制表示的值应视为标准值。本标准不包括其他测量单位。 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====== 4.1 当在淬火状态下对材料进行淬火时，本规程尤其适用于评估淬火的充分性。该实践也可用于研究后续热处理（例如，油漆或粘结固化）或实际沉淀处理对固有腐蚀类型的影响。可热处理铝合金的晶间耐蚀性通常与固溶热处理后的淬火条件和随后的时效处理直接相关。 4. 4.2 本规程不太适用于非热处理加工硬化铝合金，如1XXX、3XXX和5XXX系列（见试验方法 第67页 ). 4.3 本规程不涉及由此产生的晶间腐蚀的解释。生产商和用户应就本试验产生的晶间腐蚀程度和深度的重要性达成一致。

1.1 This practice covers the procedures for immersion tests in sodium chloride + hydrogen peroxide solution. It is primarily for tests of wrought heat treatable aluminum alloys (2XXX and 7XXX) but may be used for other aluminum alloys, including castings. It sets forth the specimen preparation procedures and the environmental conditions of the test and the means for controlling them. 1.2 This practice is intended for evaluations during alloy development and for evaluating production where it may serve as a control test on the quality of successive lots of the same material (see MIL-H-6088 and U.S. Federal Test Method Std. 151b). Therefore strict test conditions are stipulated for maximum assurance that variations in results are attributable to lot-to-lot differences in the material being tested. Note 1: This practice does not address sampling or interpretation or significance of results. 1.3 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. 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 ====== 4.1 This practice is especially useful for evaluating the adequacy of quenching when performed on material in the as-quenched condition. The practice may also be used to study the effect of subsequent thermal processes (for example, paint or bonding cures) or of actual precipitation treatments on the inherent type of corrosion. Intergranular corrosion resistance of heat treatable aluminum alloys is often directly related to the quenching conditions applied after solution heat treatment and to the subsequent aging treatment. 4 4.2 This practice is not well suited for non-heat treatable work hardening aluminum alloys, such as the 1XXX, 3XXX, and 5XXX series (see Test Method G67 ). 4.3 This practice does not deal with the interpretation of resulting intergranular corrosion. The significance of the extent and depth of any intergranular corrosion resulting from this test is to be agreed upon between producer and user.