The invention discloses an injection molding method for manufacture of a metal-resin composite member; wherein the resin composition used in the method includes a plurality of metal particles having one or more metal melting points between about 200° C. and 400° C.; the resin composition is heated to a temperature higher than the resin melting point and higher than one or more metal melting points to provide a heated resin composition; and wherein injecting the heated resin into a mold results in contact of the heated resin with one or more disposed heated metal member(s) to provide a composite member.