Semi-finished products of ferritic steel and catalytic substrate

Details Semi-finished products of ferritic steel and catalytic substrate Semi-finished products of ferritic steel and catalytic substrate

1988-02-26

1989-08-22

Shine, W. J.

Catalyst, solid sorbent, or support therefor: product or process

Miscellaneous

148325, B01J 3200, C22C 3802, C22C 3806, C22C 3818

Patent

active

048596493

ABSTRACT:
A ferritic, heat-resistant steel whose behavior at high application temperatures is improved by the combined addition of oxygen affinitive elements. Apart from stabilizing the electric resistance of heating elements by addition of zirconium, titanium and rare earth metal, also the creep elongation of the steel is considerably reduced under load at temperatures above 900.degree. C., the thermal stress capacity thus being increased. The resulting complex oxide coating increases the protective function with regard to preserving the metallic cross-section in continuous and/or cyclic heat treatments.
The steel is composed of:

REFERENCES:
patent: 3992161 (1976-11-01), Cairns et al.
patent: 4055448 (1977-10-01), Fujikura et al.
patent: 4414023 (1983-11-01), Aggen et al.
patent: 4601999 (1986-07-01), Retallick et al.
patent: 4726853 (1988-02-01), Gressin et al.

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