Comparative results on chloride stress corrosion cracking of steam generator materials in cyclic steam environment
Cylindrical and U-bend specimens were tested in cycled 430 to 280/sup 0/C steam, 900 psi, containing NaCl and varying percentages of oxygen, with pH controlled by phosphate to 10.5. Welded, stress relieved and not, and unwelded specimens were exposed in an autoclave for stress cracking tendency. Resistant materials included welded and unwelded ferritic steels with 2.25 to 12 percent Cr; annealed 9Cr--1Mo, 12 super Cr, and possibly stabilized 2.25Cr--1Mo. Other resistant materials included Inconel 625 welded with itself; nonwelded Inconel 625, Inconel 601, 690; Incoloy 809E, Hastelloy C-276 and G. Slightly susceptible were welded Incoloy 800 and Inconel 600 joined with Inconel 82 and IN-102; Hastelloy X and S welded with themselves, and a number of nonwelded stainless steels. Highly susceptible materials included 304 welded with 308 and Hastelloy N; electron beam melted 26Cr--1Mo welded with itself or not welded. Increasing Cr content 7.5 to 37 percent improved resistance.
- Research Organization:
- Southern Nuclear Engineering, Dunedin, FL
- OSTI ID:
- 7364464
- Journal Information:
- Mater. Performance; (United States), Journal Name: Mater. Performance; (United States) Vol. 14:11; ISSN MTPFB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOY-IN-102
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
BORON ADDITIONS
BORON ALLOYS
CARBON ADDITIONS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRACKS
FILLER METALS
HASTELLOYS
HEAT RESISTING ALLOYS
HIGH TEMPERATURE
INCOLOY 800
INCOLOY ALLOYS
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
JOINTS
MEDIUM PRESSURE
MOLYBDENUM ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
STAINLESS STEEL-304
STAINLESS STEEL-410
STAINLESS STEELS
STEAM
STEELS
STRESS CORROSION
TITANIUM ADDITIONS
TITANIUM ALLOYS
TUNGSTEN ALLOYS
WELDED JOINTS
ZIRCONIUM ADDITIONS
ZIRCONIUM ALLOYS