SYMPOSIA PAPER Published: 01 January 1950
STP43967S

Accelerated Corrosion Testing of Chromium-Nickel Stainless Steel Weldments

Source

Accelerated corrosion tests on metal-arc welded specimens of 0.06 per cent carbon and 0.03 per cent maximum carbon chromium-nickel stainless steel were conducted in hot nitric-hydrofluoric acids, boiling 65 per cent nitric acid and boiling copper sulfate-sulfuric acid solution. The results are compared with field experience with a welded pickling tank where both types of alloys were used.

The three common corrosion tests differ markedly in their attack on weld heat-affected zones. The nitric-hydrofluoric acid test appears to be the most severe criterion of susceptibility to weld decay.

Service results, where the corrosive conditions were severe, compared well with laboratory tests and confirmed the fact that the 0.03 per cent maximum carbon alloys are free from harmful carbide precipitation in the as-welded condition.

Author Information

Bloom, F, K
Supervising Metallurgists, Research Laboratories, Armco Steel Corp, Middletown, Ohio
Carruthers, M, E
Supervising Metallurgists, Research Laboratories, Armco Steel Corp, Middletown, Ohio
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Details
Developed by Committee: A01
Pages: 87–102
DOI: 10.1520/STP43967S
ISBN-EB: 978-0-8031-5911-2
ISBN-13: 978-0-8031-6065-1