HRC30-45 Tungsten carbide machining steel, stainless steel, cast iron TPKN2204PDR TPKN2204PDR Semi-finishing machining steel, cast iron, stainless steel, high precision treatment, one-stop service from manufacturing to shipment, Coating color Blackish, Yellow, Copper color. Standard size specification PVD Coating Hardness HRC30-45 Application Scope- Steel, Stainless steel, Cast Iron, hard-working material Steel P25-40, Stainless steel M25-M40, Cast Iron K15-K30       …