GB/T 4334.1-2000
Method of 10 per cent oxalic acid etch test for stainless steels

Be replaced

Standard No.

GB/T 4334.1-2000

Language

Chinese

Release Date

2000

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Replace By

GB/T 4334-2008

Lastest

GB/T 4334-2020

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.

GB/T 4334.1-2000 history

• 2020 GB/T 4334-2020 Corrosion of metals and alloys－Test methods for intergranular corrosion of austenitic and ferritic-austenitic (duplex) stainless steels
• 2008 GB/T 4334-2008 Corrosion of metals and alloys.Test methods for intergranular corrosion of stainless steels
• 2000 GB/T 4334.1-2000 Method of 10 per cent oxalic acid etch test for stainless steels

GB/T 4334.1-2000 Method of 10 per cent oxalic acid etch test for stainless steels was changed to GB/T 4334-2008 Corrosion of metals and alloys.Test methods for intergranular corrosion of stainless steels.

GB/T 4334.1-2000 -All Parts