The product makes the cold steel as base material and sinters bronze spherical powder in the middle. Besides, surface plastic penetrates into the void of spherical copper powder. SF-2 material which combines the advantages of metal and plastic, not only has higher bearing capacity and better dimensional stability, but also has excellent characteristics of anti-friction, wear resistance, compatibility and adaptability. It is a new type of sliding bearing material which has a prominent property and has a broad application prospect.