ISO 18069:2015规定了不锈钢和镍基合金在预期液体中均匀腐蚀速率的测量，以及材料在活化后钝化的能力。本方法旨在用于估算大气条件下液体中的均匀腐蚀速率，用于特定环境条件下的化学工业，而不是鉴定试验。它还可用于确定iso腐蚀图，以及腐蚀速率超过0.1 mm/a的温度。 ISO 18069:2015不适用于超过1 mm/a的过度腐蚀率，因为更高的腐蚀率表明不锈钢不适用于该应用。也不适用于含有卤化物（尤其是氯化物）的溶液，因为这些可能会导致局部腐蚀。

ISO 18069:2015 specifies the measurements of the corrosion rate of uniform corrosion for stainless steels and nickel based alloys in the intended liquids and the ability for the material to passivate after activation. This method is intended to be used for estimation of the uniform corrosion rate in liquids, under atmospheric conditions, for the chemical industry under specific environmental conditions and not as a qualification test. It can also be used to determine iso-corrosion diagrams and at which temperature the corrosion rate exceeds 0,1 mm/a. ISO 18069:2015 is not intended for excessive corrosion rates above 1 mm/a since an even higher corrosion rate indicates that the stainless steel is not suitable in the application. Nor is it intended to be used for solutions containing halides, especially chlorides, since these might cause localized corrosion.