... ,Sodium Silicate 2)Material:Carbon steel,alloy steel Auto Parts,Casting Part,Hanger Auto Parts,Casting Part,Hanger 1) Molding process: Loss ... , Gray iron, Aluminum, Ductile Iron 3) Molding: Hand made,Wax (suspension) line 4) Possible Heat Treatment: Normalizing ,Annealing, Quenching, Tempering ,Solution ...