The stress corrosion cracking of sensitized stainless steel in thiosulfate solutions

Journal Article · Mon Mar 01 04:00:00 EST 1982 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3579265· OSTI ID:5922834

Isaacs, H S; Vyas, B; Kendig, M W

The stress corrosion cracking (SCC) of sensitized Type 304 stainless steel in thiosulfate solutions has been studied using constant extension rate tests. Very low concentrations of about 6.10/sup -7/ M Na/sub 2/S/sub 2/O/sub 3/ (0.1 ppm) gave cracking. With boric acid added, higher concentrations (1 ppm) were required. The SCC was shown to be electrochemically controlled. Below -0.5 V/sub SCE/ (-0.75/sub SHE/), no SCC took place; above this potential, the rate of SCC increased with potential. Straining was required before SCC continued at 0.5 V if the potential was held at or below -0.5 V for extended times.

• Research Organization: Brookhaven National Lab., Upton, NY
• OSTI ID: 5922834
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 38:3; ISSN CORRA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AQUEOUS SOLUTIONS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRACK PROPAGATION
DISPERSIONS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MIXTURES
NICKEL ALLOYS
SOLUTIONS
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
STRESS CORROSION
THIOSULFATES