Aluminum alloy wire

Patent metadata

Field	Value
Publication number	US-9422612-B2
Application number	US-201013505260-A
Country	US
Kind code	B2
Filing date	Oct 27, 2010
Priority date	Oct 30, 2009
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

An aluminum alloy wire having excellent bending characteristics, strength, and electrically conductive characteristics, an aluminum alloy stranded wire, a covered electric wire including the above-described alloy wire or stranded wire, and a wire harness including the covered electric wire are provided. The aluminum alloy wire contains not less than 0.1% and not more than 1.5% by mass of Mg, not less than 0.03% and not more than 2.0% of Si, not less than 0.05% and not more than 0.5% of Cu, and a remainder including Al and an impurity, satisfies 0.8≦Mg/Si ratio by mass ≦3.5, has an electrical conductivity from 35% IACS to 58% IACS, a tensile strength from 150 MPa to 400 MPa, and an elongation not less than 2%. The aluminum alloy wire is manufactured through the steps of casting→rolling→wiredrawing→solution heat treatment.

First claim

The invention claimed is:

1. An aluminum alloy wire used as a conductor, comprising:
not less than 0.2% and not more than 1.5% by mass of Mg, not less than 0.25% and not more than 2.0% of Si, not less than 0.1% and not more than 0.5% of Cu, as essential elements, and a remainder including Al and an impurity, wherein among said essential elements, at least Cu is precipitated in the aluminum alloy, and having
a mass ratio Mg/Si of said Mg to said Si satisfying 0.8≦Mg/Si≦3.5,
an electrical conductivity not less than 35% IACS and less than 58% IACS,
a tensile strength not less than 150 MPa and not more than 400 MPa, and
an elongation not less than 2%.

2. The aluminum alloy wire according to claim 1 , further comprising at least one element of Fe and Cr, wherein
Fe content by mass is not less than 0.1% and not more than 1.0%, and Cr content by mass is not less than 0.01% and not more than 0.5%.

3. The aluminum alloy wire according to claim 1 , further comprising at least one element of Ti and B, wherein
a proportion by mass of Ti is not more than 500 ppm, and a proportion by mass of B is not more than 50 ppm.

4. The aluminum alloy wire according to claim 1 , having a wire diameter not less than 0.1 mm and not more than 1.5 mm.

5. An aluminum alloy stranded wire obtained by stranding together a plurality of the aluminum alloy wires according to claim 1 .

6. A covered electric wire comprising, as a conductor, any of the aluminum alloy wire according to claim 1 , an aluminum alloy stranded wire obtained by stranding together a plurality of the aluminum alloy wires, and a compressed wire obtained by compression-molding said aluminum alloy stranded wire, and comprising an insulating cover layer on an outer circumference of the conductor.

7. A wire harness comprising the covered electric wire according to claim 6 and a terminal portion attached to an end portion of said covered electric wire.

8. The aluminum alloy wire according to claim 1 , wherein content of Si is greater than that of Cu or content of Mg is greater than that of Cu.

9. An aluminum alloy wire used as a conductor, comprising:
not less than 0.2% and not more than 1.5% by mass of Mg, not less than 0.25% and not more than 2.0% of Si, not less than 0.1% and not more than 0.5% of Cu, as essential elements, and a remainder consisting of Al and an impurity, wherein among said essential elements, at least Cu is precipitated in the aluminum alloy, and having a mass ratio Mg/Si of said Mg to said Si satisfying 0.8≦Mg/Si≦3.5.

Assignees

• Kusakari Misato
• Nishikawa Taichiro
• Nakai Yoshihiro
• Takaki Yoshiyuki
• Otsuka Yasuyuki
• Sumitomo Electric Industries
• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems

Inventors

• Kusakari Misato
• Nishikawa Taichiro
• Nakai Yoshihiro
• Takaki Yoshiyuki
• Otsuka Yasuyuki

Classifications

• H01B13/0292

  After-treatment · CPC title

• H01B13/0016

  for heat treatment · CPC title

• C22C21/08 Primary

  with silicon · CPC title

• C22C21/06 Primary

  with magnesium as the next major constituent · CPC title

• C22F1/04

  of aluminium or alloys based thereon · CPC title