Corrosion resistance of Alloy 600 and Alloy 800 in chloride-containing high-pressure water. Paper No. 114. [20 ppM chloride, 295/sup 0/C, 10/sup 7/ Pa]
Depending on the heat treatment, Alloy 600 shows very varying resistance to intergranular corrosion as measured by the ASTM G-28 test. Alloys with high carbon and/or low titanium contents show very high susceptibility to intergranular corrosion also in the solution-annealed condition. Alloys with low contents of carbon and titanium have good resistance in the solution annealed condition. Alloy 800 (Sanicro 30) shows very good resistance in the G-28 test. As indicated by the G-28 test, the microstructure of Alloy 600 is changed by exposure at 295/sup 0/C for 24000 h. This is also the case for Alloy 800 in the stress-relieved condition, whereas the microstructure was not influenced in the solution-annealed condition. In the autoclave test both alloys showed very good resistance to SCC attack regardless of heat treatment and crevice conditions. However, one must bear in mind that the effect of the nitriding conditions could not be evaluated. Autoclave testing in high-pressure water-20 ppM Cl/sup -/, 1 ppM O/sub 2/, 295/sup 0/C, 10/sup 7/, Pa-containing hydrazine for 24000 h gives nitriding in Alloy 600 specimens. 11 fig, 3 tables. (auth)
- Research Organization:
- Sandvik AB (Sweden)
- OSTI ID:
- 7363517
- Report Number(s):
- CONF-750401-22
- Resource Relation:
- Conference: NACE International Corrosion/75 conference, Toronto, Canada, 14 Apr 1975
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
INCOLOY 800
STRESS CORROSION
INCONEL 600
WATER
CORROSIVE EFFECTS
CHLORIDES
CORROSION RESISTANCE
HIGH TEMPERATURE
HYDRAZINE
MEDIUM PRESSURE
ALLOYS
CHEMICAL REACTIONS
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
CORROSION
HALIDES
HALOGEN COMPOUNDS
HEAT RESISTING ALLOYS
HYDROGEN COMPOUNDS
INCOLOY ALLOYS
INCONEL ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NIOBIUM ALLOYS
OXYGEN COMPOUNDS
360105* - Metals & Alloys- Corrosion & Erosion