ISO 9591:2004规定了测定铝合金抗应力腐蚀开裂（SCC）的方法。 包括取样方法、试样类型、加载程序、环境类型和结果解释。 本国际标准旨在确定铝合金的化学成分、制造方法和热处理对SCC的耐受性。 它适用于铸件、半成品、零件和焊接件形式的铸造和锻造铝合金。 由于大多数自然环境和许多人工环境中都含有氯化物，ISO 9591:2004可用于比较在海洋大气和含有氯化物的环境中使用的产品的性能，前提是故障机制不变。

ISO 9591:2004 specifies a method for the determination of resistance to stress corrosion cracking (SCC) of aluminium alloys. It covers the method of sampling, the types of specimens, the loading procedure, the type of environment and the interpretation of results. This International Standard is aimed at determining resistance to SCC as a function of the chemical composition, the method of manufacture and heat treatment of aluminium alloys. It applies to cast and wrought aluminium alloys in the form of castings, semi-finished products, parts and weldments. Since most natural and many artificial environments contain chlorides, ISO 9591:2004 can be used to compare the performance of products employed under marine atmospheres and in environments containing chlorides, providing that the failure mechanism is not changed.