US 7,507,305 B2
Wear-resistant copper-based alloy
Minoru Kawasaki, Toyota (Japan); Tadashi Oshima, Aichi-gun (Japan); Takao Kobayashi, Seto (Japan); Kazuyuki Nakanishi, Seto (Japan); and Hideo Tachikawa, Nisshin (Japan)
Assigned to Toyota Jidosha Kabushiki Kaisha, Toyota-shi (Japan)
Appl. No. 10/580,463
PCT Filed Dec. 10, 2004, PCT No. PCT/JP2004/018870
§ 371(c)(1), (2), (4) Date May 25, 2006,
PCT Pub. No. WO2005/005190, PCT Pub. Date Jun. 30, 2005.
Claims priority of application No. 2003-419734 (JP), filed on Dec. 17, 2003.
Prior Publication US 2007/0125458 A1, Jun. 07, 2007
Int. Cl. C22C 9/06 (2006.01)
U.S. Cl. 148—435  [420/487; 420/587] 11 Claims
OG exemplary drawing
 
1. A wear-resistant copper-based alloy, comprising, by weight, 4.7 to 22.0% nickel, 0.5 to 5.0% silicon, 2.7 to 22.0% iron, 1.0 to 15.0% chromium, 0.01 to 1.97% cobalt,
2.7 to 22.0% tantalum and/or hafnium, and the balance of copper with inevitable impurities.