Alternative for evaluating sour gas resistance of low-alloy steels and corrosion-resistant alloys

Journal Article · Sat May 01 00:00:00 EDT 1993 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3316068· OSTI ID:6463662

Tsujikawa, S ^[1]; Miyasaka, A ^[2]; Ueda, M ^[3]; Ando, S ^[4]; Shibata, T; Haruna, T ^[5]; Katahira, M ^[6]; Yamane, Y ^[7]; Aoki, T ^[8]; Yamada, T ^[9]

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1. Univ. of Tokyo (Japan)
2. Nippon Steel Corp., Aichi (Japan)
3. Sumitomo Metal Ind., Hyogo (Japan)
4. Univ. of Osaka Prefecture, Sakai (Japan)
5. Osaka Univ. (Japan)
6. NKK Corp., Hiroshima (Japan)
7. Kawasaki Steel Corp. (Japan)
8. National Research Inst. for Metals, Tokyo (Japan)
9. Nagoya Municipal Industrial Research Inst. (Japan)

Thiosulfate ion was used as a substitute for hydrogen sulfide (H[sub 2]S) to simulate stress corrosion cracking (SCC) of corrosion-resistant alloys (CRAs) and sulfide stress cracking (SSC) of high-strength, low-alloy steels. Several SCC tests using a variety of stress application techniques showed the brine containing thiosulfate exhibited similar severity to brine containing H[sub 2]S in regard to SCC when plastic strain was applied to the CRAs. Materials that exhibited SCC susceptibility in brine containing thiosulfate agreed well the SCC susceptibility of those in brine containing H[sub 2]S. Types 304 (UNS S30400) and 316L (UNS S31603) stainless steels and duplex stainless steel exhibited in both environments. However, high-nickel austenitic alloys such as alloys 904L (UNS N08904) and 825 (UNS N08825) did not. A10[sup [minus]3] to 10[sup [minus]2] mol/l S[sub 2]O[sub 3][sup 2[minus]] addition in 20% NaCl aqueous solution at 353 K corresponded to H[sub 2]S of 0.1 to 1 MPa at 473 K. The SSC susceptibilities of high-strength, low-alloy steels in a 10[sup [minus]3] mol/l S[sub 2]O[sub 3][sup 2[minus]] + 5% NaCl + 0.5% acetic acid solutions were close to those in NACE Standard TM0284-86 solution (substitute ocean water saturated with 0.1 MPa H[sub 2]S). Results suggested the possibility of using thiosulfate ion as an alternative to H[sub 2]S.

• OSTI ID: 6463662
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 49:5; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ACETIC ACID
ALKALI METAL COMPOUNDS
ALLOYS
AUSTENITIC STEELS
BRINES
CARBOXYLIC ACIDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CHROMIUM-NICKEL-MOLYBDENUM STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CRACK PROPAGATION
HALIDES
HALOGEN COMPOUNDS
HEAT RES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INDUSTRY
IRON ALLOYS
IRON BASE ALLOYS
LOW ALLOY STEELS
MATERIALS
MATERIALS TESTING
MOLYBDENUM ALLOYS
MONOCARBOXYLIC ACIDS
NATURAL GAS INDUSTRY
NICKEL ALLOYS
NICKEL STEELS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PETROLEUM INDUSTRY
SODIUM CHLORIDES
SODIUM COMPOUNDS
STAINLESS STEEL-304
STAINLESS STEEL-316L
STAINLESS STEELS
STEEL-CR17NI12MO3-L
STEEL-CR19NI10
STEELS
STRESS CORROSION
SULFIDATION
SULFIDES
SULFUR COMPOUNDS
TESTING
THIOSULFATES