GB/T 4334.1-2000 in English

《GB/T 4334.1-2000不锈钢 10%草酸浸蚀试验方法》由TC183（全国钢标准化技术委员会）归口，主管部门为中国钢铁工业协会。
本标准规定了不锈钢10%草酸浸蚀试验方法的试样、试验溶液、试验设备、试验条件和步骤、试验结果的平定及试验报告。本标准适用于检验奥氏体不锈钢晶间腐蚀的筛选试验方法，试样在10%草酸溶液中电解侵蚀后，在显微镜下观察被侵蚀表面的金相组织，以判定是否需要进行硫酸硫酸铁、65%硝酸、硝酸-氢氟酸以及硫酸-硫酸铜等长时间热酸试验。在不允许破坏被测结构件和设备的情况下，也可以作为独立的晶间腐蚀检验方法。

Scope

This standard specifies the sample, test solution, test equipment, test conditions and procedures, test result evaluation and test report of stainless steel 10% oxalic acid etching test method. This standard is applicable to the screening test method for inspecting the intergranular corrosion of austenitic stainless steel. After the sample is electrolytically etched in 10% oxalic acid solution, observe the metallographic structure of the etched surface under a microscope to determine whether sulfuric acid- Ferric sulfate, 65% nitric acid, nitric acid-hydrofluoric acid and sulfuric acid-copper sulfate and other long-term hot acid tests. It can also be used as an independent inspection method for intergranular corrosion under the condition that the structure and equipment under test are not allowed to be damaged.