The product adopts steel alloy to be formed and sintered which makes the relative density of the copper alloy equal to or greater than 98% to improve the wear-resistance of materials and prolong the service life of eight word board. This product is widely used in diesel engine, automobile, agricultural machinery, machine tools, hydraulic machinery, forestry machinery, engineering machinery, die casting machine, metallurgical equipment, food packaging machinery, textile, light industry machinery and aerospace, weapons and other machinery industry.