... to 2500 timesMicrostructureHomogeneous tempered martensite or troostiteUsage :Blast cleaning of cast steel shot: Used for blast cleaning of casting, die ... steel, steel structure, descaling of forging. Shot peening of cast steel shot: Shot peening of gear, heat treatment. Shot ... steel board, profile steel, steel structure. Pre-treatment of cast steel shot: Pre-treatment of surface, steel board, profile ...