Cobalt Chromium Molybdenum Alloy Round Rod Introduction Cobalt Chromium Molybdenum Alloy Round Rod is an alloy with cobalt as the main component. It contains a considerable amount of chromium, molybdenum and a small amount of nickel, carbon and other alloying elements, and occasionally contains iron. Chromium cobalt alloy is a metal alloy of cobalt and chromium. These are combined with chromium and molybdenum to increase the metal's corrosion resistance.Stellite is a family of cobalt-chromium alloys designed for wear resistance.