Products offered: 1) Steel Shot: Grain Size: S780, S660, S550, S460, S390, S330, S280, S230, S170, S110, S70 2) Steel Grit: Grain Size: G10, G12, G14, G16, G18, G20, G25, G40, G50, G80, G120 Chemical composition of the steel shot and steel grit: C = 0.70 - 1.20 %, Mn = 0.60 - 1.20 %, Si = 0.40 - 1.20 %, S = 0.05 % Max., P = 0.05 % Max. Hardness: Steel shot: 40 - 50 HRC Steel grit: 50 - 60 HRC Hardness deviation: 3.0 HRC Density: Steel shot: 7.4 g/cm3 Steel grit: 7.6 g/cm3 Microstructure: Uniform structure of finely tempered Martensite Ervin life: 2800 Standards: SAE J444