Comparative corrosion resistance of some high-nickel, chromium-molybdenum alloys

Journal Article · Wed Feb 01 04:00:00 EST 1989 · Mater. Performance; (United States)

OSTI ID:6050034

Corbett, R A; Morrison, W S

The comparative corrosion resistance of alloy C-276 (UNS N10276), alloy 625 (UNS N06625), Hastelloy C-22 (UNS N06022), and ALLCORR (UNS N06110) was studied in sodium chloride-ferric chloride solutions, and nitric, hydrochloric, formic, and sulfuric acids, some with additives such as HF. Butt-welded coupons were used to determine the corrosion characteristics of weldments. In addition to weight loss measurements, crevice and pitting attack were evaluated. For a complex chemical facility to vitrify high-level radioactive wastes, a corrosion study was conducted to select materials of construction for handling the various process streams, several of which were unusually corrosive. Two high-nickel, chromium-molybdenum alloys, C-276 (UNS N10276) and 625 (UNS N06625), were acceptable for much of the processing.

• Research Organization: Corrosion Testing Labs. Inc., Wilmington, DE (US)
• OSTI ID: 6050034
• Journal Information: Mater. Performance; (United States), Journal Name: Mater. Performance; (United States) Vol. 28:2; ISSN MTPFB
• Country of Publication: United States
• Language: English

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ALKALI METAL COMPOUNDS
ALLOYS
CHEMICAL PLANTS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
CHROMIUM ALLOYS
COMPARATIVE EVALUATIONS
CORROSION
CORROSION RESISTANCE
CORROSIVE EFFECTS
CRACKING
DECOMPOSITION
HALIDES
HALOGEN COMPOUNDS
HIGH-LEVEL RADIOACTIVE WASTES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
INDUSTRIAL PLANTS
INORGANIC ACIDS
IRON CHLORIDES
IRON COMPOUNDS
MANAGEMENT
MATERIALS
MATERIALS HANDLING
MATERIALS TESTING
MOLYBDENUM ALLOYS
NICKEL ALLOYS
PITTING CORROSION
PROCESSING
PYROLYSIS
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
SODIUM CHLORIDES
SODIUM COMPOUNDS
STRESS CORROSION
SULFURIC ACID
TEST FACILITIES
TESTING
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
VITRIFICATION
WASTE MANAGEMENT
WASTE PROCESSING
WASTES