... shots produces fast cleaning speeds at reduced costs.2.Grade: S10,S20,S30,S40,S50,S60,S100,S150,S200,S300. Size ... .2mm, 0.1-0.3mm, 0.2-0.4mm, 0.4-0.8mm, 0.6-1.0mm, 0.7-1.25mm ... ,1.0-1.4mm,1.25-1.7mm,1.4-2.0mm,1.7-3.0mm. 3. Appearance: round , shining ... Composition%C≤0.20%Mn≤2.00%Si≤4.00%S≤0.03%P≤0.03%Cr17-19%Ni7-10%HardnessHRC32-42microstructureFerrite ...