A composite material used for a resin mold for forming hardened resin by
hardening fluid resin is provided. The composite material comprises a
first material having excellent wear resistance against the fluid resin
and a second material having excellent unwettability against the fluid
resin. The resin mold comprises a substrate of the first material, a
large number of pores each provided to form an opening on a surface of
the substrate opposite to the fluid resin and a film of the second
material formed along the inner wall surface of each pore at least around
the opening. Each of the large number of pores is a communicating hole
connecting the surface opposite to the fluid resin and the remaining
surface with each other. Therefore, releasability between a mold surface
and the hardened resin and wear resistance of the composite material
against the fluid resin can be improved.