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CORROSION RESISTANCE OF TYPE 329 STAINLESS STEEL IN NITRIC ACID CONTAINING CHLORIDE ION

Journal Article · · Corrosion
Type 329 stainless steel, previously found to have a corrosion resistance markedly greater than that of Types 316, 304L, and 309SCb in the condensing vapors from solutions of 7.5N HNO/sub 3/ and 0.2N HCl, was found resistant in similar solutions with Cl contents up to 0.38N. Welded specimens of Type 329 must be fully annealed to prevent severe intergranular attack in the heat-affected zone when immersed in boiling solutions of the above-mentioned compositions. The mechanism of the attack and the influence of accumulated chromic and ferric ions are discussed. The behavior of severely stressed specimens of the steel in these solutions was also investigated and compared with that of Type 316 specimens. (auth)
Research Organization:
Dept. of Mines and Technical Surveys, Ottawa
Sponsoring Organization:
USDOE
NSA Number:
NSA-18-004202
OSTI ID:
4125987
Journal Information:
Corrosion, Journal Name: Corrosion Vol. Vol: 19
Country of Publication:
Country unknown/Code not available
Language:
English