... finish machining and semi-finish machining for the cast iron, non-ferrous metal, alloy and unalloyed materials. ... 1560≥91.0Qualified for machining of chilled cast iron, alloy cast iron, refractory steel and alloy steel. Also Qualified ... 14.9≥1840≥89Qualified for rough machining of cast iron, non-ferrous metal, nonmetal materials, drawing of steel ... , drilling and punching and impacting. carbide pellets