... and green sand-material: Gry iron casting, ductile iron casting, carbon steel casting, alloy steel casting and Al casting, brass casting-weight: 0.5kgs~2000kgs4. Machining ... Resin Sand Cold Harden Resin SandBSINVESTMENT CASTING Sodium Silicone (Water galss)Stainless Steel, Carbon Steel, Special Alloy Steel Bronze,Brass, Aluminum JISSilica ...