SEDL / STP / STP174-EB / STP44987S

Chromium-Nickel Alloys for High-Temperature Applications

Bucklin, Albert G.
Staff Member and Associate Professor, Massachusetts Institute of Technology, Cambridge, Mass

Grant, Nicholas J.
Staff Member and Associate Professor, Massachusetts Institute of Technology, Cambridge, Mass

Pages: 10    Published: Jan 1956

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Abstract

Chromium-nickel alloys containing 35 to 70 per cent chromium with additions of iron, molybdenum, and columbium have been precision cast and tested in stress-rupture at 1600 to 1800 F. Results surpassing many commercial alloys have been obtained, especially with alloys containing 40 to 45 per cent chromium, 2 to 10 per cent iron, 2 per cent molybdenum, and 2 per cent columbium. Higher chromium alloys exhibit high hardenability which may make possible high-temperature bearing applications. Forging of the 40 to 50 per cent chromium alloys is difficult, but possible, and should improve through vacuum melting.