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超低碳不锈钢具有良好的抗晶间腐蚀性能。抗腐蚀试验方法,在各国有关标准中均有所规定。一般采用加铜和不加铜的硫酸铜—硫酸法和硝酸法,前者灵敏度较低,后者用固溶状态的钢试验,有一定局限性。还有用硫酸铁—硫酸法代替硝酸法,以及用硝酸—氢氟酸法检验含钼不锈钢等。从实际使用考虑,我们对现有各法,包括硝酸法,硫酸铜——硫酸——铜屑法(简称铜屑法),硝酸——
Ultra-low carbon stainless steel has good resistance to intergranular corrosion. Anti-corrosion test methods, in the relevant national standards are provided. The general use of copper and without copper sulfate - sulfuric acid and nitric acid method, the former lower sensitivity, the latter with the solution state of the steel test, there are some limitations. There are ferric sulfate - sulfuric acid instead of nitric acid method, as well as nitric acid - hydrofluoric acid test containing molybdenum stainless steel. From the practical considerations, we have the existing methods, including nitric acid method, copper sulfate - sulfuric acid - copper chip method (referred to as copper chip method), nitric acid -