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Products Description Material: M42(H59)>M35(H55)>M2(H9) H9(M2) H9(M2) Chemical Composition C Si Mn P S Cr Mo V W Content (%) 0.85 0.33 0.34 0.027 0.005 4.12 4.73 1.78 5.74 Cu Ni 0.12 0.24 M42(SKH59) ...