Hardfacing Applied Base Material Hardness, Rockwell Standard Bimetallic Tungsten Carbide Bimetallic Application Information Flitetech FT-506 Nickel 48-52 Rc Excellent Good General Purpose Flitetech FT-3000 Tungsten Carbide Composite 58-62 Rc Poor Optimum All, including abrasive, and/or corrosive materials Colmonoy 56 Nickel 46-53 Rc Excellent Good General Purpose Colmonoy 83 Nickel 46-53 Rc Poor Excellent General Purpose Flame-hardening Alloy Steel 48-58 Rc Good Fair General Purpose Stellite 6 Cobalt 32-36 Rc Fair Poor General Purpose Stellite 12 Cobalt 34-38 Rc Fair Poor General Purpose Iconel® 625/718 Ni-Cr-Mo 52-72 Rc * * General Purpose