Published: Jan 1962
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Tensile and notched-bar impact tests were performed on production heats of seven grades of cast chromium-nickel stainless steels at temperatures from 70 F to −430 F. No ductile-brittle transition was observed for any of the alloys including those having a small amount of delta ferrite dispersed in the microstructure. Retention of toughness at low temperature was dependent upon an austenitic structure and low interstitial (carbon + nitrogen) content. Markedly higher tensile strength at the lower temperatures was contingent upon the formation of martensitic ferrite in the
Hall, E. R.
Metallurgist, Esco Corp., Portland, Ore
Paper ID: STP49621S