Corodur Corocarb A description: COROCARB–A is composed of a special pre-alloyed tube filled with coarsely grained Fused Tungsten Carbide (FTC). The FTC has an exceptionally high hardness of over 2360 HV0,4 giving extended wear protection to hardfaced areas. For special hardfacing on machine parts of unalloyed, low alloyed or cast steel with a carbon content up to 0,45%. A higher carbon content could lead to cracking. Depending on the size and composition of the area to be hardfaced, the proper rod diameter and grain size should be chosen. If the area will encounter heavy abrasion a small grain size is recommended.