针对核电行业国内外标准对不锈钢铜-硫酸铜-硫酸晶间腐蚀试验规定的方法，从敏化条件、腐蚀剂的选择、对比试样的必要性、试样弯曲角度和直径以及声响试验的必要性等方面进行了对比和分析。结果表明：NB/T 20004-2014与RCC-M标准在试验方法上不存在技术性差异，其他标准存在微小差异；对比试样在实际试验中是必要的，不用其作为参照可能造成误判，影响试验的准确性；声响试验不能作为单独的方法来验证晶间腐蚀试验结果，因其存在很大的不可靠性，仅能用作辅助判断。

The intergranular corrosion test methods of stainless steel by copper-bluestone-sulfuric acid in nuclear power industry standards at domestic and abroad were compared and analyzed from sensitization conditions, selection of corrosive agents, necessity of contrast samples, bending angle and diameter of sample, and necessity of sound test. The results show that there is no technical difference in the test methods between NB/T 20004-2014 and RCC-M, and there are minor differences in other standards; it is necessary to use the contrast sample in the actual test, failure to use it as a reference may lead to misjudgment and affect the accuracy of the test; the sound test cannot be used as a separate method to verify the intergranular corrosion test results, because of its high unreliability, it can only be used as an auxiliary judgment.