Steel, Aluminum, Iron, Zinc, Slag or ash, Natural graphite, Nickel, Bismuth, Antimony, Cadmium, Non ferrous alloy, Ferrous alloy, Lead, Tin, Indium, Palladium, Aircraft drive shafts power take offs or screw jacks, Aircraft transmission units, Balance shafts, Cam followers, Camshaft lifters, Carburetors, Connecting rods, Crankcase ventilation valves, Cylinder heads