Hydrogen embrittlement of cathodically protected subsea bolting alloys

Journal Article · Thu Jul 01 00:00:00 EDT 1993 · Materials Performance; (United States)

OSTI ID:5787339

Wolfe, L H; Burnette, C C; Joosten, M W ^[1]

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1. Conoco Inc., Ponca City, OK (United States)

Normal operations of cathodic protection (CP) systems caused hydrogen embrittlement failures of subsea bolts made of Monel K-500 alloy (UNS N05500) on offshore platforms. Subsequent testing showed that the embrittlement could be predicted from cathodically protected slow strain rate tensile tests. Additional slow strain rate tests have shown that CP caused embrittlement of Ferralium 255 (S32550), Inconel X-750 (N07750), Inconel 718 (N07718), high strength steel, and 13% chromium alloys. Beryllium copper (C17200), A-286 steel (S66286), Beta-C titanium (R58640), and steel at a yield strength of 793 MPa (115 ksi) were not embrittled under the same conditions.

• OSTI ID: 5787339
• Journal Information: Materials Performance; (United States), Vol. 32:7; ISSN 0094-1492
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
NICKEL BASE ALLOYS
HYDROGEN EMBRITTLEMENT
CATHODIC PROTECTION
CHROMIUM ALLOYS
HYDROGEN
HYDROGEN SULFIDES
INCONEL 718
INCONEL ALLOYS
MONEL
OFFSHORE PLATFORMS
ALLOY-NI53CR19FE19NB5MO3
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
CHALCOGENIDES
CORROSION PROTECTION
CORROSION RESISTANT ALLOYS
ELEMENTS
EMBRITTLEMENT
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HYDROGEN COMPOUNDS
IRON ALLOYS
MATERIALS
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NIOBIUM A
NONMETALS
SULFIDES
SULFUR COMPOUNDS
360103* - Metals & Alloys- Mechanical Properties
423000 - Engineering- Marine Engineering- (1980-)