Patent ID: 6068813
Filing Date: 2000-05-30
Classification: B22F,C22C

Abstract:
A method of making a metallurgical powder composition comprising the steps of:(a) providing a prealloy powder comprising iron and molybdenum, wherein the amount of the molybdenum in the prealloy powder is from about 0.10 weight percent to about 2.0 weight percent, based on the total weight of the prealloy powder;(b) admixing with the prealloy powder a copper containing powder having a weight average particle size of about 60 microns or less, and a nickel containing powder having a weight average particle size of about 20 microns or less; and(c) bonding the copper containing powder, the nickel containing powder and the prealloy powder in the presence of a binding agent to form a metallurgical powder composition, wherein the metallurgical powder composition comprises from about 0.5 weight percent to about 4.0 weight percent copper, from about 0.5 weight percent to about 8.0 weight percent nickel, and at least about 83 weight percent of the prealloy powder.