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By certification 
crusher machine hard wearing part :hammer ,backing board grate board ,High wearing resistance material , high manganese steel with metal Cr & Mo & Re added ,main chemical composition as : C,1.1-1.2% Si=0.3—0.8% Mn,12.5—14% S< 0.05% P, 0.04% Cr,0.5—0.7% Mo,0.5—0.7% Re,0.2—0.25% ,
Casting weight range can be from 5kg to 15000 kg ,size can reach 5000mm X2000mm x1000mm dimension tolerance  +/-1.5mm.
 
