(19)
(11) EP 1 967 597 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
11.04.2012 Bulletin 2012/15

(43) Date of publication A2:
10.09.2008 Bulletin 2008/37

(21) Application number: 08151504.1

(22) Date of filing: 15.02.2008
(51) International Patent Classification (IPC): 
C22C 9/06(2006.01)
H01B 1/02(2006.01)
 C22F 1/08(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated Extension States:
AL BA MK RS

(30) Priority: 27.02.2007 US 903788 P
08.02.2008 US 69287 P

(71) Applicant: Fisk Alloy Wire, Inc.
Hawthorne, New Jersey 07507 (US)

(72) Inventor:
  • Saleh, Joseph
    Morristown, NJ NJ 07960 (US)

(74) Representative: Bentz, Jean-Paul 
Novograaf Technologies 122 Rue Edouard Vaillant
92593 Levallois-Perret Cedex
92593 Levallois-Perret Cedex (FR)

   


(54) Beryllium-Copper conductor


(57) A process is provided for forming an age hardened wire for use as an electrical conductor, which wire is formed from a copper base alloy consisting of from 1.25 to 3.6 wt% nickel, from 0.25 to 0.45 beryllium, and the balance copper and impurities which do not affect the properties of said alloy, with the nickel and beryllium being present in the copper base alloy in a ratio of nickel to beryllium from 5.0 to 8.0. The process comprises the steps of providing a copper base alloy material consisting of from 1.25 to 3.6 wt% nickel, from 0.25 to 0.45 beryllium, and the balance copper and impurities which do not affect the properties of said alloy, which nickel and beryllium are present in the copper base alloy in a ratio of nickel to beryllium from 5.0 to 8.0, cold working the material in a single step; and age hardening the cold worked material in a single step to form a wire in a cold worked and aged hardened condition having an electrical conductivity of at least about 60% IACS.







Search report