Patent
Copper alloy for electric and electronic parts
Masaaki Isono,Kanao Kenji,Takahiro Manako,Satoshi Maruo,Matsui Takashi,聡 丸尾,隆 松井,隆弘 真名子,誠昭 磯野,健志 金尾 +9 more
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TLDR
In this paper, the authors proposed a method to improve the stamping workability by reducing the wear of a stamping die and the burrs and sagging in a copper alloy subjected to punching while satisfactorily maintaining its strength, electric conductivity, stress relaxation resistance and plating properties.Abstract:
PROBLEM TO BE SOLVED: To furthermore improve the stamping workability (the reduction of the wear of a stamping die and the burrs and sagging in a copper alloy subjected to punching) of a Cu-Ni-Si series alloy while satisfactorily maintaining its strength, electric conductivity, stress relaxation resistance and plating properties. SOLUTION: This invension is composed of a copper alloy having a compsn. contg., by weight, 0.1 to 4.0% Ni, 0.01 to 1.0% Si, 0.01 to 5.0% Zn and 0.0001 to 0.005% S, furthermore contg. one or >= two kinds of elements selected from the group of 0.00003 to 0.003% Se, 0.00003 to 0.003% Te, 0.00003 to 0.003% Sb and 0.00003 to 0.003% Bi by 0.00003 to 0.005% in total, and the balance Cu with inevitable impurities.read more
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High-mechanical strength copper alloy
Takayuki Usami,Takao Hirai +1 more
TL;DR: A high-mechanical strength copper alloy, which comprises Ni 3.5 to 4.5% by mass, Zn 0.2 to 1.5%, Mg 0.01 to 0.20%, and S less than 0.005%, was proposed in this article.
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Copper alloy material for parts of electronic and electric machinery and tools
Takayuki Usami,Takao Hirai +1 more
TL;DR: In this paper, a specific crystal grain diameter and a specific ratio between the longer diameters of a crystal grain on a cross section parallel or perpendicular to a direction of final plastic working are defined.
Patent
High-strength high-conductivity copper alloy wire rod of excellent resistance to stress relaxation characteristics
TL;DR: A high-strength high-conductivity copper alloy wire rod of excellent resistance to stress relaxation characteristics, which exhibits a conductivity of 20 to 60% IACS and a tensile strength of 700 to 1300 MPa is described in this article.
Patent
High-strength, high-conductivity copper alloy wire excellent in resistance to stress relaxation
TL;DR: A high-strength, high conductivity copper alloy wire that is excellent in resistance to stress relaxation, which contains 1.0 to 4.5% by mass of Ni, 0.2 to 1.1%, and less than 0.005% of S, with the balance being Cu and inevitable impurities, is described in this paper.
Patent
Copper alloy plate material for electric and electronic components
TL;DR: In this paper, a copper alloy plate material for electric and electronic components comprising 1.5 to 4.0% by mass of Ni and 0.3 to 0.5% of Si with the balance consisting of Cu and unavoidable impurities.