BS ISO 18089:2015描述了确定临界裂缝温度的程序 （CCT）适用于恒电位控制下的不锈钢。该测试的主要优点是在一次测试中可以快速测量CCT 程序本国际标准中确定的CCT可作为 性能，例如，比较不同等级不锈钢的相对性能。 本国际标准中所述的试验不用于确定 在使用过程中会发生缝隙腐蚀。该方法不适用于临界点蚀温度（CPT）值低于以下的材料 当在同一试验溶液中和在相同温度下测量时，根据ISO 17864测量20°C 同样的潜力。交叉引用:ISO 3696ISO 8044ISO 17864ISO 18070ASTM G150-13购买本文件时可获得的所有现行修订版均包含在购买本文件中。

BS ISO 18089:2015 describes the procedure for determining the critical crevice temperature (CCT) for stainless steels under potentiostatic control.The principal advantage of the test is the rapidity with which the CCT can be measured in a single test procedure. The CCT, as determined in this International Standard, can be used as a relative index of performance, for example, to compare the relative performance of different grades of stainless steel. The test described in this International Standard is not intended to determine the temperature at which crevice corrosion will occur in service.This method is not intended for materials with critical pitting temperature (CPT) values below 20 °C measured in accordance with ISO 17864, when measured in the same test solution and at the same potential.Cross References:ISO 3696ISO 8044ISO 17864ISO 18070ASTM G150-13All current amendments available at time of purchase are included with the purchase of this document.