Electrically conductive composite material
AssigneeSumitomo Electric Industries, Ltd.
InventorsSusumu Yamamoto, Kazuyoshi Sato
Life of this patent
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Abstract
An electrically conductive composite material having a copper core and an iron- or nickel-base alloy clad material, with the cross sectional ratio of the clad material to core satisfying the relation 0.1<Se/(Se+Scu).ltoreq.0.8 and the tensile strength P (in kg/mm.sup.2) satisfies the relation 230-1.9.times.(100Scu+2.3Se)/Se+Scu).gtoreq.P.gtoreq.80-0.4.times.(100Scu+ 2.3Se)/Se+Scu), where Se represents the cross-sectional area of the clad material and Scu represents the cross-sectional area of the copper core. The clad material may be made of iron, steel, alloyed steel, stainless steel, or a steel inner layer and a stainless steel outer layer.
Claims6
An electrically conductive composite comprising:
- a copper or copper alloy core;
- an iron- or nickel-base alloy clad material surrounding the core;
- the cross-sectional ratio of the clad material to core is within the range of:
- 0.1.ltoreq.Se/(Se+Scu).ltoreq.0.8 where:
- Se is the cross-sectional area of the clad material,
- Scu is the cross-sectional area of the copper-core and,
- the tensile strength P in kg/mm is within the range of:
- 230-1.9(100Scu+2.3Se)/(Se+Scu).ltoreq.P.ltoreq.80-0.4 (100Scu+2.3Se)/(Se+Scu).
Dependencies are inferred from the claim text.