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Effects on stress rupture life and tensile strength of tin additions to Inconel 718Because Inconel 718 represents a major use of columbium and a large potential source of columbium for aerospace alloys could be that of columbium derived from tin slags, the effects of tin additions to Inconel 718 at levels which might be typical of or exceed those anticipated if tin slag derived columbium were used as a melting stock were investigated. Tin was added to 15 pound Inconel 718 heats at levels varying from none added to approximately 10,000 ppm (1 wt%). Limited 1200 F stress rupture testing was performed at stresses from 68,000 to 115,000 psi and a few tensile tests were performed at room temperature, 800 and 1200 F. Additions of tin in excess of 800 ppm were detrimental to ductility and stress rupture life.
Document ID
Document Type
Conference Paper
Dreshfield, R. L. (NASA Lewis Research Center Cleveland, OH, United States)
Johnson, W. (Special Metals Corp.)
Date Acquired
August 11, 2013
Publication Date
October 1, 1982
Publication Information
Publication: COSAM (Conserv. Of Strategic Aerospace Mater.) Program Overview
Subject Category
Distribution Limits
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19830003012Analytic PrimaryCOSAM (Conservation Of Strategic Aerospace Materials) program overview