Abstract: Effect of content of Fe powder,load,time,and speed of test on the friction and wear properties of polyformaldehyde/Fe powder composites was studied using a ring-on-block tester. With increasing contents of Fe powder, the frictional coefficient and mass loss of the composites were firstly decreased and then increased. W The results show that the friction and wear properties of POM /Fe powder composites were firstly decreased and then increased with content of Fe powder increased. Efficient of friction of composites with 4 phr Fe powder was reduced from 0.13 of POM to 0.098；The coefficient of friction of composites with 4 phr Fe powder was always the lowest under different loads.

Key words: Fe powder, polyformaldehyde, the friction and wear properties, composite