... .SHardness Performance & application recommendedISOg/cm3MPaHRAYM6A14.9185092.0 Fine grain alloy, good wear resistance. Semifinishing of chilled cast iron, non-ferrious metals ... materials at low cutting speed.K20YG10X14.5220091.0Fine grain alloy, good wear resistance , Used for processing hard wood, veneer board, PCB ... steel and high manganese steel, etc.K30~K40 - K40 carbide saw blades