Sizes in mm : 0.3 mm ---2.5 mm Grain shape: Chemical composition: SUS302 C = 0.09% Si = 0.8% Mn = 1.20% P =0.043% Cr =17.16% Ni =7.5% SUS304 C = 0.08% Mn = 0.9% P =0.043% Cr =18% Ni =8.5% SUS403 C = 0.1% Mn = 1.20% P =0.043% Cr =17% Ni =1% Technical index: Hardness:400-600HV Density:Round Ball 7.9 g/cm? Cutting Ball 7.8 g/cm?