Carpenter Technology Corporation

Crs Holdings, Inc.

Edward A Wanner

Sunil Widge

Wilson P Rehrer

Dwight D Wegman

Daniel A DeAntonio

A precipitation strengthenable, nickel-cobalt-iron base alloy and articles made therefrom are disclosed. The alloy contains controlled amounts of silicon, nickel, cobalt, iron, chromium, niobium, titanium, and aluminum which are critically balanced to provide a unique combination of high strength, good ductility, and controlled thermal expansion, together with good thermal stability and good oxidation resistance up to about 1200.degree. F. or higher.

Controlled thermal expansion alloy and article made therefrom

A heat resisting, controlled thermal expansion, nickel-iron base alloy consisting essentially of, in weight percent, about:

Heat resisting controlled thermal expansion alloy balanced for having

This invention provides a process for improving, to at least a predetermined level, the stress rupture life and/or stress rupture ductility of precipitation hardenable nickel and nickel-iron base alloys containing nickel, niobium, and silicon when said alloys have less than a predetermined level of these stress rupture properties when worked and aged by a primary heat treatment. This improvement in properties is accomplished by controlled precipitation of a sufficient quantity of a (Ni, Nb, Si)-containing intermetallic phase.

Heat treatment of precipitation hardenable nickel and nickel-iron alloys

A heat, corrosion and wear resistant austenitic steel and article made therefrom is disclosed containing in weight percent about

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Leesport, PA, United States of America

Edward A Wanner