... tungsten steel mill cutter(1) Suitable for copper, Cast Iron, Carbon steel, Mould steel, Stainless steel, Titanium Alloy, Tool steel, and Heat-treated steel processing ... .(2) Main features: Grain size carbon tungsten, high toughness, TiAlN coating, high wear-resistance, special use for ... the lathe efficiency, save more production time. Tungsten steel mill cutter