Type Chemical Composition(%) Mn C S P Fe Si Se A 99.8 0.02 0.03 0.003 0.03 0.005 0.08 B 99.7 0.04 0.05 0.005 0.205 Notes: A-Our Factory's Standard; B-China National Standard. Size: Normally, -40mesh to +325mesh, +40mesh 1% max., -325mesh 18% max. Special products are available upon request.