grinding steel bar 1,size:60-90mm,3-6m 2,hardness:45-55 3,even hardness;good ... .370.6—1.2≤0.035≤0.035≤0.04SIZEDIA60—90mm,3-6mHARDNESSHRC45--55 2, B typeCHEMICAL ELEMENTSCSiMnSPCrCONTENT0.72—0.820 ... .7—0.8≤0.035≤0.0350.28-0.60SIZEDIA60—90mm,3-6mHARDNESSHRC45--55Features:(1) Characteristics: a) High hardness and resistance ...