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Abstract. A detailed study of AISI and stainless steels (SSs) has been conducted to correlate the degree of sensitization (DOS) measured by the. ASTM a Test, Intergranular Corrosion, IGC, ASTM A Practice, Copper – Copper Sulfate – 16% sulfuric acid, ASTM A – Practice E (Strauss Test). ASTM A Practice E test. This practice describes the procedure by which the copper-copper sulfate% sulfuric acid test is conducted to determine .

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ASTM A Intergranular Corrosion Testing and Analysis

Corrosion Tests are conducted to determine the resistance of a metal to chemical attack. Our laboratory is well organized, adequately equipped, and have competent staff who are trained to conduct these tests.

Corrosion test is measured by weight loss per area of test sample. These test methods determine the relative pitting resistance of stainless steel and pactice, chromium bearing alloys. Edges shall be rounded and a fine final polish is required at all surface exclude the weld cap and root area.


This test method describes the procedure for conducting the ferric chloride corrosion test for detecting the presence of detrimental intermetallic phases in Duplex Stainless Steels. Although this test method uses some similar equipment, this method should not be confused with Test Method G This test method does not determine the critical pitting temperature or test for the suitability for use in a particular environment.

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Corrosion is measured by a weight loss that is converted to a corrosion rate. The corrosion test has the advantage of being relatively rapid, requiring 24 hours plus sample preparation time.

It is not sensitive to size or orientation, provided that edge attack is not ignored. A suitable sample of an austenitic stainless steel is exposed to boiling acidified copper sulfate solution for 15 hours. After exposure in the boiling solution, the specimen is bent.

Intergranular cracking or crazing is evidence of susceptibility. News Project Details Tools.

Intergranular Corrosion Testing: An Overview of ASTM A262

Our Corrosion Test services and capabilities are as follows: Sample condition before soaking in Ferric chloride solution. Test sample was etched using Oxalic Acid with electrolyte etching.


Ditch structure sensitization was observed in test sample after etched under high optical microscope. Specimen surface before soaking in boiling Ferric Sulfate-Sulfuric Acid solution.

Bend Specimen after soaking. Examination of intergranular cracks and fissures on bend surface.