... 4.Test:Tensile test,Impact test. 5.Quality Assurance. Using Investment casting parts 1. Materials:carbon steel, alloy steel, stainless steel, brass ... SandGrey Iron, Ductile Iron, Malleable Iron, Stanless Steel, Carbon, Steel, Aluminium,Brass,BronzeASTMBSJISDINetcFuran Resin SandCold Harden Resin SandINVESTMENTCASTINGSodium Silicone (Water galss ...