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GRCop-84: A High-Temperature Copper Alloy for High-Heat-Flux ApplicationsGRCop-84 (Cu-8 at.% Cr-4 at.% Nb) is a new high-temperature copper-based alloy. It possesses excellent high-temperature strength, creep resistance and low-cycle fatigue up to 700 C (1292 F) along with low thermal expansion and good conductivity. GRCop-84 can be processed and joined by a variety of methods such as extrusion, rolling, bending, stamping, brazing, friction stir welding, and electron beam welding. Considerable mechanical property data has been generated for as-produced material and following simulated braze cycles. The data shows that the alloy is extremely stable during thermal exposures. This paper reviews the major GRCop-84 mechanical and thermophysical properties and compares them to literature values for a variety of other high-temperature copper-based alloys.
Document ID
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Ellis, David L.
(NASA Glenn Research Center Cleveland, OH, United States)
Date Acquired
September 7, 2013
Publication Date
February 1, 2005
Subject Category
Metals And Metallic Materials
Report/Patent Number
Funding Number(s)
WBS: WBS 22-794-20-77
Distribution Limits
Work of the US Gov. Public Use Permitted.
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