US 7,491,256 B2
	Iron-based powder composition
Olof Andersson, Helsingborg (Sweden)
Assigned to Höganäs AB, Höganäs (Sweden)
Appl. No. 11/578,942 PCT Filed Apr. 25, 2005, PCT No. PCT/SE2005/000597 § 371(c)(1), (2), (4) Date Nov. 08, 2006, PCT Pub. No. WO2005/102567, PCT Pub. Date Nov. 03, 2005.
Claims priority of application No. 0401086 (SE), filed on Apr. 26, 2004.
Prior Publication US 2007/0199409 A1, Aug. 30, 2007
Int. Cl. C22C 1/05 (2006.01); C22C 33/02 (2006.01)

U.S. Cl. 75—231  [75/253; 75/254]

9 Claims

1. An iron-based powder composition comprising, in addition to an iron-based powder, between 0.02% and 0.6% by weight of a machinability improving additive, said additive comprising 0.01% to 0.5% by weight calcium fluoride and 0.01% to 0.5% by weight non-agglomerated hexagonal boron nitride and optional additives, wherein the amount ratio between the non-agglomerated hexagonal boron nitride and calcium fluoride is between 1:1 and 1:10.