PURPOSE: To embody a cast product varying in surface characteristics and internal characteristics by coating the inside wall of a casting mold with metallic powder, then pouring molten metal into this mold.

CONSTITUTION: The metallic powder with which the inside wall of the casting mold is coated is preferably the powder of an amorphous or nonequil. state obtd. by a rapid cooling or mechanical alloying method as this powder can be sintered even if the temp. of the molten metal is lower. The metallic powder may be pure metal or alloy. The metallic powder may otherwise be a mixture composed of plural kinds. The metallic powder having preferably 0.1 to 50μm particle sizes is used. This metallic powder is dispersed into an org. solvent to prepare a slurry and this slurry is poured into the casting mold. The residual liquid is discharged after 30 to 60 seconds and the casting mold is dried. The casting mold is then calcined at need. The product having the surface which is a sintered layer and is fine in structure and exhibits the characteristics different from the characteristics of the internal casting layer is obtd.