Austenite alloy tubes having excellent high temperature vapor ox

Details Austenite alloy tubes having excellent high temperature vapor ox Austenite alloy tubes having excellent high temperature vapor ox

1980-11-24

1983-05-10

Skiff, Peter K.

Metal treatment

Compositions

Heat treating

148 166, 148 38, C22C 3840

Patent

active

043828299

ABSTRACT:
The austenite alloy tube has a composition of 15.about.26% of Cr, 8.about.35% of Ni, 1.0% or less of Si, 2.0% or less of Mn and less than 0.25% of N and the balance of iron and impurities. The nitrogen content on the inner surface of the tube is at least 0.25%. If desired, one or more of 0.6% or less of Ti, 0.6% or less of Al, 3.0% or less of Mo and 1.0% or less of Nb may be incorporated.

REFERENCES:
patent: 3969161 (1976-07-01), Mimino et al.
patent: 4026699 (1977-05-01), Eiselstein et al.
patent: 4070209 (1978-01-01), Usui

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