Cast Steel Shot Types: S780/SS2.5 S660/SS2.0 S550/SS1.7 S460/SS1.4 S390/SS1.2 S330/SS1.0 S280/SS0.8 S230/SS0.6 S170/SS0.5 S110/SS0.3 S70/SS0.2 The Major Technological Index: Products Steel Shot Chemical Composition C 0.80～1.20% Mn 0.35～1.20% Si ≥0.40 S ≤0.05% P ≤0.05% Micro hardness Normal:40～50HRC (377～509HV) Special:52～56HRC (543～620HV) Special:56～60HRC (620～713HV Hardness Deviation Max Deviation ±3.0HRC Microstructure Tempered Martensite or Sorbite Density 7.4g/cm3  Application: Blast cleaning: Used for blast cleaning of casting, die-casting, forging, sand removal of casting, steel plate, H type steel, steel structure. Rust removal: Rust removal of casting, forging, steel plate, H type steel, steel structure, descaling of forging. Shot peening: Shot peening of gear, heat treatment. Shot blasting: Shot blasting of profile steel, ship board, steel board, and steel material.  Shot blasting: Shot blasting of steel board, profile steel, steel structure. Pre-treatment: Pre-treatment of surface, steel board, profile steel, steel structure, before-painting Application Devices: Steel shot mainly used for the following equipment including rotary barrel shot blasting machine, chain type shot blasting machine, bedrail type shot blasting machine, pass-through shot blasting machine, table type shot blasting machine, Pendent-chain & Pile-type Shot Blasting Machine, trolley type shot blasting machine, vibrator, ablator equipment, shot peening machine, shot peening equipment, sandblasting machine, sandblasting equipments, steel material pretreatment production line, steel plate pretreatment production line, steel structure pretreatment production line.