Abstract: Since a powder-produced material comprises cerium fluoride, it can exhibit good wear-resistance. The cerium fluoride content may be set in the range of from 0.1 to 22% by weight, in particular, in the range of from 0.1 to 10.0% by weight, based on the total weight of the powder-produced material. The powder-produced material may comprise a ferrous matrix including hard particles, and the ferrous matrix includes cerium fluoride.

Abstract: Disclosed are a sintered material having good machinability and process for producing the same. In the material, a composite oxide of CaO--MgO--SiO.sub.2 family are dispersed in Fe-dominant metal matrix. Wherein the composite oxide has the molar ratio of CaO/MgO from 0.05 to 2.0 wt. %, and also has the content of SiO.sub.2 from 50 to 75 wt. %. Hard particles of FeMo or such can be dispersed in the metal matrix. The maximum content of composite oxides in the sintered material are suggested to be 1.5 wt. % with the consideration of the mechanical strength. The sintered material can be cut with less tool wear and is produced by the process with low cost.