Patent ID: 7255724

Claim:
An improved segregation-resistant and dust-resistant metallurgical composition for making compacted parts, comprising: (a) at least about 80 percent by weight of an iron or iron-based powder; (b) at least one alloying element powder; and (c) about 0.05 to about 2 percent by weight of a binding/lubricating combination of polyethylene wax and ethylene bis-stearamide, the polyethylene wax having a weight average molecular weight below about 1000 and a melting point below that of ethylene bis-stearamide, and being present in amount between 10 and 90% by weight of the binding/lubricating combination, wherein the particles of the iron or iron-based powder are coated with a layer of the polyethylene wax binding particles of the alloying element(s) and particles of the ethylene bis-stearamide.