Title:
【発明の名称】銅合金
Document Type and Number:
Japanese Patent JPH04503832
Kind Code:
A
Abstract:
PCT No. PCT/GB90/00396 Sec. 371 Date Sep. 5, 1991 Sec. 102(e) Date Sep. 5, 1991 PCT Filed Mar. 16, 1990 PCT Pub. No. WO90/11381 PCT Pub. Date Oct. 4, 1990.A copper based alloy, which when employed in a marine environment with a cathodic protection system or when galvanically coupled to a dissimilar metal, is resistant to hydrogen embrittlement, copper being present in an amount of about 70% to 80% by weight, and the alloy having in addition, (by weight): -nickel 13.5% to 20.0% -aluminium 1.4% to 2.0% -manganese 3.4% to 9.3% -iron 0.5% to 1.5% -chromium 0.3% to 1.0% -niobium 0.5% to 1.0% - and wherein the constituent elements are so controlled that: A Cu/(Mn+Ni) is less than 4.9 in terms of weight %; B Cu/(Mn+Ni) is greater than 3 in terms of weight %; C Al+Nb is at least 2.1 in terms of weight %; and D Ni/(Al+Nb) is at least 6.0 in terms of weight %.
Inventors:
Clark, Charles, Alfred
Goor, Prodiot
Goor, Prodiot
Application Number:
JP50474590A
Publication Date:
July 09, 1992
Filing Date:
March 16, 1990
Export Citation:
Assignee:
Langley Alloys Limited
International Classes:
C22C9/06; (IPC1-7): C22C9/06
Domestic Patent References:
| JPS62224650A | 1987-10-02 | |||
| JPS58157932A | 1983-09-20 | |||
| JPS62202038A | 1987-09-05 | |||
| JPS5044951A | 1975-04-22 |
Attorney, Agent or Firm:
Kaoru Furuya (3 outside)