... machine Chenshi Machinery is a professional manufacturer for all kinds of screw and barrel in this field for ... .Please find the detailed infomation about bimetallic assembly parts of screw barrel as below:Technical Data: Bimetallic layer ... Mo, Al, Ni, Cu, P, S40Cr: Cr, Mn, C, Si, Ni, S, P, CuStainless steel: Cr, Ni, Ti ... , Mn, N, Nb, Mo, Si, CuSKD61: C, Si, Mn, Cr, Mo, V, S, PFerrous alloy: Fe ...