Patent ID: 6375709
Filing Date: 2002-04-23
Classification: B22F

Abstract:
A metal powder composition for warm compaction containing metal powder and a lubricant, wherein 50 to 100% by weight of the lubricant is an aromatic or partly aromatic polyester having a number-average molecular weight Mn of 5,000 to 50,000, and wherein the metal powder composition comprises 0.1 to 2% by weight of the lubricant, 0.005 to 3% by weight of binding agent, 0 to 0.5% by weight of plasticizer, 0.01 to 3% by weight of graphite, 0 to 2% by weight of thermoplastics, 0 to 15% by weight of alloying elements, 0 to 2% by weight of processing aids, and 0 to 2% by weight of hard phases, the balance being iron powder selected from the group consisting of essentially pure iron powder, partially prealloyed iron powder, and prealloyed iron powder.