1) LuHuan Cast Steel Shot 2) For shot blasting / ... 0.3mm,0.5mm,0.6mm,0.8mm,1.0mm,1.2mm,1.4mm,1.7mm,2.0mm,2.5mm Hardness: 40-50HRC(377-509HV ... machine.Main ChemistryChemistry(C) 0.70-1.20%(Mn) 0.35-1.20%(Si) 0.40-1.20%(S) N0.05%(P) ... 0.3mm,0.5mm,0.6mm,0.8mm,1.0mm,1.2mm,1.4mm,1.7mm,2.0mm,2.5mm Hardness: 40-50HRC(377-509HV ... .Main ChemistryChemistry(C) 0.70-1.20%(Mn) 0.35-1.20%(Si) 0.40-1.20%(S) N0.05%(P) ...