GB/T 4334.4-2000
Method of nitric-hydrofluoric acid test for stainless steels

Be replaced

Standard No.

GB/T 4334.4-2000

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 nitric acid-hydrofluoric acid corrosion test method. This standard is applicable to the inspection of intergranular corrosion tendency of molybdenum-containing austenitic stainless steel. The intergranular corrosion tendency is determined by the ratio of the corrosion rate in 10% nitric acid and 3% hydrofluoric acid solution at a temperature of 70°C to the corrosion rate of the reference sample.

GB/T 4334.4-2000 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 4334.4-2000 Method of nitric-hydrofluoric acid test for stainless steels

GB/T 4334.4-2000 Method of nitric-hydrofluoric acid 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 4334.4-2000 -All Parts