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Available creep data for the refractory-metal alloys C-103 (Nb-10%Hf-1%Ti-0.7%Zr), ASTAR-811C (Ta-8%W-1%Re-0.7%Hf-0.025%C), W-5Re (W-5%Re), and W-25Re (W-25%Re) were correlated by the Orr-Sherby-Dorn method and extrapolated to 1 percent creep over 10 years. In addition, useful life was specified to be two standard estimates of error below the mean surface through the data. Over the temperature range of 1200 to 1800 K, ASTAR-811C was found to be the strongest of these alloys. In particular,doi:10.1063/1.41836 fatcat:icogj6mu4jagtbmwetq33br2ke