... investment casting,Sodium Silicate Technology,Colloidal Silica 2) Material: Carbon steel, Alloy steel, Stainless steel, Brass, Gray iron, Aluminum, Ductile Iron 3) Molding: Hand ... , Quenching, Tempering ,Solution, Passivation5) Industry involved: Agricultural,Engineering,Automotive industry,Forklift Parts,Mining Machinery,Furnace Parts6) Part Unit Weight range: Chinese loss ...