1) Alloy 2) Cobalt alloy 3) Metal 
Stellite alloy is a range of cobalt-chromium alloys designed for wear resistance. It may also contain tungsten or molybdenum and a small but important amount of carbon. It is a trademarked name of the Kennametal Stellite Company and was invented by Elwood Haynes in the early 1900s as a substitute for cutlery that stained (or that had to be constan...
Cobalt based alloy commonly applied as coating to valve trims to provide high resistance to wear; corrosion and high temperatures.
[n] - (trademark) a cobalt-base alloy with chromium and other metals
Proprietary name of a group of complex alloys retaining their hardness strength and resistance to oxidation at high temperatures; contains W, Co, Cr and C.
noun a very hard alloy of cobalt and chromium with cobalt as the principal ingredient; used to make cutting tools and for surfaces subject to heavy wear