... .0HRCMicrostructureTempered Martensite or SorbiteDensity7.2g/cm3 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 ... . Pre-treatment of cast steel shot:Pre-treatment of surface, steel board, profile steel, steel structure, before-painting. cast iron grit