Austenitic heat resisting steel containing chromium and nickel

Metal treatment – Compositions – Heat treating

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Details

75128G, 75128T, 148136, C22C 3848, C22C 3850

Patent

active

039575454

ABSTRACT:
Creep rupture strength of austenitic heat resisting steel containing chromium and nickel is improved by adding to the steel small amounts of niobium, a niobium-tantalum or a niobium-tantalum-titanium mixture, and maintaining a Nb/C ratio of less than 3.5.

REFERENCES:
patent: 2190486 (1940-02-01), Schafmeister
patent: 2528637 (1950-11-01), Clarke
patent: 2531155 (1950-11-01), Phillips
patent: 3235417 (1966-02-01), Roy
patent: 3284250 (1966-11-01), Yeo
patent: 3303023 (1967-02-01), Dulis
patent: 3306736 (1967-02-01), Rundell
patent: 3401036 (1968-09-01), Dulis
patent: 3607239 (1971-09-01), Mimino
patent: 3751244 (1973-08-01), Mimino et al.

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