Heat resistant high chromium austenitic alloy excellent in stren

Details Heat resistant high chromium austenitic alloy excellent in stren Heat resistant high chromium austenitic alloy excellent in stren

1995-01-31

1996-08-06

Ip, Sikyin

Alloys or metallic compositions

Nickel base

Chromium containing

420447, 420448, 420449, 420588, 148428, 148442, C22C 1900

Patent

active

055431097

ABSTRACT:
A high Cr austenitic heat resistant alloy excellent in high temperature strength which essentially consists of, in weight percent, from more than 0.02% to 0.10% C, not more than 1.0% Si, not more than 2.0% Mn, 28 to 38% Cr, 35 to 60% Ni, from more than 0.5% to 1.5% Ti, not more than 0.05% N, 0.01 to 0.3% Al, 0.001 to 0.01% B, 0 to 0.1% Zr, 0 to 1.0% Nb, one or both of 0.5 to 3.0% Mo and 1.0 to 6.0% W, and the balance being Fe and incidental impurities. The alloy may further contain one or both of 0.001 to 0.05% Mg and 0.001 to 0.05% Ca. This alloy is suitable for producing a single layered tube which is less expensive and more reliable than the conventional double layered tube.

REFERENCES:
patent: 5021215 (1991-06-01), Sawaragi et al.

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