Effect of heat treatment on the resistance of C-0. 5Mo steel base metal and its welds to hydrogen attack
API Publication 941 third edition describes eight cases of hydrogen attack experienced in equipment and piping whose cause has not yet been determined. In order to clarify the heat treatment conditions for preventing failure, resistance of variously heat-treated C-0.5Mo steels and those welds to hydrogen attack were evaluated by conducting hydrogen exposure tests and metallurgical examinations. The examination results on the effects of the austenitization temperatures, cooling rate from an austenitizing temperature and temperature conditions, on the resistance of C-0.5Mo steel base metal, and also postweld heat treatment temperatures to the welds thereof are discussed herein. The recommended range of heat treatment temperatures for preventing hydrogen attack in the steel is also described.
- Research Organization:
- The Japan Steel Works, Ltd., Hokkaido
- OSTI ID:
- 6004501
- Report Number(s):
- CONF-8505145-
- Journal Information:
- Proc., Am. Pet. Inst., Refin. Dep.; (United States), Journal Name: Proc., Am. Pet. Inst., Refin. Dep.; (United States) Vol. 64; ISSN PAPDD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hydrogen attack of carbon-0. 5-molybdenum steels
Effect of heat treatment on hydrogen attack resistance of C-0. 5 Mo steels for pressure vessels, heat exchangers, and piping
Related Subjects
020400* -- Petroleum-- Processing
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
AUSTENITIC STEELS
CARBON STEELS
COOLING
CORROSION RESISTANCE
EMBRITTLEMENT
HEAT TREATMENTS
HYDROGEN EMBRITTLEMENT
INDUSTRIAL PLANTS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MATERIALS TESTING
METALLURGY
MOLYBDENUM ALLOYS
PETROLEUM REFINERIES
PIPES
STEELS
TEMPERATURE EFFECTS
TESTING
WELDED JOINTS