Extra-fine copper alloy wire, extra-fine copper alloy twisted wire, extra-fine insulated wire, coaxial cable, multicore cable and manufacturing method thereof
US7544886B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 2006 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Nov 14, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B11/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An extra-fine copper alloy wire has: a wire diameter of 0.010 to 0.025 mm; 1 to 3 weight % of silver (Ag), and a balance consisting copper (Co) and an inevitable impurity; a tensile strength of not less than 850 MPa; an electrical conductivity of not less than 85% IACS; an elongation of 0.5 to 3.0%; and a lowering rate in tensile strength of not more than 2%. The lowering rate is represented by [(1−σh1/σh0)×100%] where σh1 is a tensile strength of the wire measured after a heat treatment under conditions of a heating temperature of not more than 350° C. and a heating time of not more than 5 seconds, and σh0 is a tensile strength of the wire measured before the heat treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.