High chromium steel of mixed structure containing ferrite for hi

Details High chromium steel of mixed structure containing ferrite for hi High chromium steel of mixed structure containing ferrite for hi

1979-01-23

1980-09-16

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75126B, 75126C, 148 37, C22C 3902

Patent

active

042227712

ABSTRACT:
High chromium steel, for use at high temperature, of a mixed structure containing ferrite and 0.02-0.09% C, less than 1.0% Si, 0.1-2.0% Mn, 7.0-13.0% chromium, 1.2-3.0% Mo, and the rest being iron and the usual impurities, or further adding aluminum in an amount less than 0.1% to said composition, or further adding 0.001-0.1% boron and less than 0.1% Ti necessary to cause the boron to act effectively, said steel being heated at temperatures lower than about 1050.degree. C. to prevent the oxidation of the steel.

REFERENCES:
patent: 2123144 (1938-07-01), Newell
patent: 2835571 (1958-05-01), Smith
patent: 2905577 (1959-09-01), Harris et al.
patent: 3539338 (1970-11-01), Mimino et al.
patent: 3834897 (1974-09-01), Nevalainen
patent: 3847600 (1974-11-01), Mimino et al.
patent: 3926685 (1975-12-01), Gueussier et al.
Metals Handbook, 8th Ed., vol. 1, p. 436, 1961.

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