GB/T 39534-2020 (English Version) PDF

Scope: This standard specifies the method for measuring the uniform corrosion rate of stainless steel and nickel-based alloys in a specific liquid and the passivation ability of the material after activation. This standard is suitable for estimating the uniform corrosion rate of materials in liquids in an atmospheric environment, and is also applicable to the chemical industry under special environmental conditions, but it is not used as a qualification test. This standard can also be used to determine the constant corrosion rate diagram and the temperature at which the corrosion rate exceeds 0.1 mm/a. This standard does not apply to the determination of excessively high corrosion rates exceeding 1 mm/a, because higher corrosion rates indicate that the stainless steel is not suitable for this application. This standard does not apply to solutions containing halides, especially chlorides, because such may cause localized corrosion.

GB/T 39534-2020 Referenced Document

GB/T 10123 Corrosion of metals and alloys—Vocabulary*， 2022-04-15 Update
GB/T 32550 Corrosion of metals and alloys.Determination of the critical pitting temperature under potentiostatic control
GB/T 6682 Water for analytical laboratory use.Specification and test methods

2020 GB/T 39534-2020 Corrosion of metals and alloys—Method for determination of the uniform corrosion rate of stainless steels and nickel based alloys in liquids