COPPER ALLOY FOR ELCTRICALLY CONDUCTIVE SPRING AND ITS PRODUCTION

Title:

COPPER ALLOY FOR ELCTRICALLY CONDUCTIVE SPRING AND ITS PRODUCTION

Document Type and Number:

Japanese Patent JP3510469

Kind Code:

B2

Abstract:

PROBLEM TO BE SOLVED: To provide a copper alloy combining excellent mechanical properties, conductivity, stress relaxation characteristics and bending workability.
SOLUTION: This copper alloy is the one having a compsn. contg., as essential components, by weight, 1.0 to 3.5% Ni, 0.2 to 0.9% Si, 0.01 to 0.20% Mg and 0.05 to 1.5% Sn, in which each content of S and O is limited to <0.005%, and the balance Cu with inevitable impurities, and the grain size thereof is regulated to >1 to 25 μm. Thus, this is suitable for terminals, connector materials and switch materials. Furthermore, as for the method for producing it, after cold working, recrystallization treatment is executed at 700 to 920°C.

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Inventors:

Hirai, Takao
Usami, Takayuki
Yoshida, Koichi
Oyama, Yoshimasa

Application Number:

JP3362898A

Publication Date:

March 29, 2004

Filing Date:

January 30, 1998

Export Citation:

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Assignee:

FURUKAWA ELECTRIC CO LTD:THE

International Classes:

C22F1/00; C22C9/06; C22F1/08; H01B1/02; (IPC1-7): C22C9/06; C22F1/08; H01B1/02

Attorney, Agent or Firm:

飯田敏三（外１名）

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