Hydrogen effect on remaining life of hydroprocessing reactors
Old vintage 2.25Cr-1Mo steels used for high-temperature/pressure hydroprocessing reactors have a high potential for temper embrittlement. The cracks caused by hydrogen embrittlement (HE) have been experienced in a stainless steel overlay and base metal of hydroprocessing reactors. In this paper, the temper embrittlement behavior during long-term service is discussed using the results of isothermal temper embrittlement tests up to 30,000 h of exposure. HE susceptibility of base metals, i.e., the threshold stress intensity factor K/sub IH/ and hydrogen-assisted crack growth rate behavior are also discussed. Based on the experimental data obtained, the remaining life assessment of a 2.25Cr-1Mo steel hydroprocessing reactor is analyzed from knowledge of HE.
- Research Organization:
- Japan Steel Works, Ltd., Chatsumachi 4, Muroran, Hokkaido (JP)
- OSTI ID:
- 6560086
- Journal Information:
- Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 44:2; ISSN CORRA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
080100* -- Hydrogen-- Production
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
CHEMICAL REACTIONS
CHEMICAL REACTORS
CHROMIUM
CHROMIUM-MOLYBDENUM STEELS
CRACK PROPAGATION
DATA
ELEMENTS
EMBRITTLEMENT
EXPERIMENTAL DATA
GAS GENERATORS
HIGH ALLOY STEELS
HIGH PRESSURE
HIGH TEMPERATURE
HYDROGEN EMBRITTLEMENT
HYDROGEN GENERATORS
HYDROGENATION
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
METALS
MOLYBDENUM
NUMERICAL DATA
SERVICE LIFE
STAINLESS STEELS
STEELS
TRANSITION ELEMENTS