Cobalt-Base Alloy Gun Barrel Study

Report No. ARL-RP-0491
Authors: William S. de Rosset; Jonathan S. Montgomery
Date/Pages: July 2014; 10 pages
Abstract: Firing tests of a small caliber experimental gun barrel made of a cobalt-base alloy have been conducted with the purpose of determining the degree of wear and erosion due to excessive firing durations. The small amount of barrel material loss makes the cobalt-base alloy an excellent candidate for use as a gun liner. An unusual wear pattern resulting from this loss was observed near the muzzle. Elimination of chemical and thermal effects made a plausible explanation of the wear pattern possible.
Distribution: Approved for public release
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Last Update / Reviewed: July 1, 2014