Sulfide stress corrosion cracking resistance of low Cr steel
- Kawasaki Steel Corp., Handa, Aichi (Japan). Research Labs.
The sulfide stress corrosion cracking resistance of low Cr steels was investigated to clarify the application limit in sour environment. The SSC threshold stress of the 0.5% Cr pipe was 95% SMYS which is the same as the Cr-free one. The SSC critical hardness of the 0.5% Cr pipe was about Hv 250 in the 3,000 ppm H{sub 2}S solution and increased with the decrease in H{sub 2}S content. The KISSC value of the 0.5% Cr pipe was nearly equal to the Cr-free one. The SSC resistance of the 0.5% Cr pipe was same as the sour resistant Cr-free pipe. The hydrogen permeation rate of the Cr bearing steel was slightly lower than that of the Cr-free steel. This fact is attributed to the difference in corrosion film created on the corrosion surface. The linepipe steel with the Cr content of 0.5% proved to have sulfide stress corrosion cracking resistance as large as the sour resistant linepipe steel.
- OSTI ID:
- 268200
- Report Number(s):
- CONF-960389--
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
03 NATURAL GAS
36 MATERIALS SCIENCE
CHEMICAL COMPOSITION
CHROMIUM
CHROMIUM STEELS
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRACK PROPAGATION
EXPERIMENTAL DATA
HYDROGEN EMBRITTLEMENT
HYDROGEN SULFIDES
LOW ALLOY STEELS
MATERIALS TESTING
MECHANICAL PROPERTIES
METALLURGICAL EFFECTS
PIPELINES
STRESS CORROSION