ASTM A262 covers the standard practices for detecting susceptibility to intergranular attack in austenitic stainless steels. These practices include five intergranular corrosion tests, namely: (1) oxalic acid etch test for classification of etch structures of austenitic stainless steels; (2) ferric sulfate-sulfuric acid test, (3) nitric acid test and (4) copper-copper sulfate-sulfuric acid test for detecting susceptibility to intergranular attack in austenitic stainless steels; and (5) copper-copper sulfate-50% sulfuric acid test for detecting susceptibility to intergranular attack in molybdenum-bearing cast austenitic stainless steels.
KeywordsASTM A262 - Austenitic Stainless Steel - Chemical Analysis - Copper Sulfate-Sulfuric Acid Test - Corrosion Resistance - Corrosion Susceptibility - Corrosion Test - Ferric Sulfate-Sulfuric Acid Test - Immersion Test - Intergranular Corrosion - Nitric Acid Test - Oxalic Acid Etch Test
ICS CODEICS Number Code 77.140.20 (Steels of high quality)
UNSPSC CODEUNSPSC Code 11171600 (Stainless steel alloys)
ASTM A262-15, Standard Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels, ASTM International, West Conshohocken, PA, 2015, www.astm.org