To provide a copper-coated magnesium wire which meets the demand for a lightweight coil wire material, and a method for manufacturing the same. The above-described problem is solved by a copper-coated magnesium wire (10) comprising a core material (1) made of magnesium, and a copper coating layer (2) made of copper or a copper alloy provided on a surface of the core material (1). In the copper-coated magnesium wire (10), a wire drawing mark is present on a surface of the copper coating layer (2), and the diameter is preferably within a range of 0.03 to 0.08 mm, inclusive. Further, a thickness of the copper coating layer (2) is preferably within a range of 5 to 30%, inclusive, as a ratio of the overall cross-sectional area. An insulating coating layer (3) may be provided on an outer circumferential side of the copper coating layer (2).

To provide a copper-coated magnesium wire which meets the demand for a lightweight coil wire material, and a method for manufacturing the same. The above-described problem is solved by a copper-coated magnesium wire (10) comprising a core material (1) made of magnesium, and a copper coating layer (2) made of copper or a copper alloy provided on a surface of the core material (1). In the copper-coated magnesium wire (10), a wire drawing mark is present on a surface of the copper coating layer (2), and the diameter is preferably within a range of 0.03 to 0.08 mm, inclusive. Further, a thickness of the copper coating layer (2) is preferably within a range of 5 to 30%, inclusive, as a ratio of the overall cross-sectional area. An insulating coating layer (3) may be provided on an outer circumferential side of the copper coating layer (2).

The present invention relates to a method for forming a hollow 26 of a ferritic FeCrAl alloy into a tube 2. While tubes made of powder metallurgical, dispersion hardened, ferritic FeCrAl alloys are commercially available, hollows made of FeCrAl alloys so far can hardly be formed into tubes of small dimensions. The major reason for the problems in forming hollows of a ferritic FeCrAI alloy into a finished product is that FeCrAl alloys are brittle. It is therefore an aspect of the present invention to provide a tube 2 made of a ferritic FeCrAl alloy having arbitrary small dimensions. Furthermore, it is an aspect of the present invention to provide a machine 1 and a method for forming a tubular hollow 26 into a finished tube 2 of a ferritic FeCrAl alloy. At least one of the above aspects is addressed by a method for forming a hollow into a tube 2 comprising the steps providing the hollow 26 of a ferritic FeCrAl alloy, heating the hollow 26 to a temperature in a range from 90 C. to 150 C., and forming the heated hollow 26 by pilger milling or drawing into the tube.

An aluminum alloy wire with a composition that contains at least one metallic element selected from the group consisting of Fe, Cr, Ni, Co, Ti, Sc, Zr, Nb, Hf, and Ta in the total amount of more than 1.4 atomic percent and 5.1 atomic percent or less and a remainder of Al and incidental impurities, wherein the aluminum alloy wire has a tensile strength of 250 MPa or more and an electrical conductivity of 50% IACS or more.

An aluminum alloy wire with a composition that contains at least one metallic element selected from the group consisting of Fe, Cr, Ni, Co, Ti, Sc, Zr, Nb, Hf, and Ta in the total amount of more than 1.4 atomic percent and 5.1 atomic percent or less and a remainder of Al and incidental impurities, wherein the aluminum alloy wire has a tensile strength of 250 MPa or more and an electrical conductivity of 50% IACS or more.

A method for producing an aluminum wire that has high strength and high conductivity even when reduced in diameter while having excellent elongation and improved in productivity. A method for producing an aluminum wire includes a solution step of subjecting a heat-treatable aluminum alloy material to a solution treatment, a wire-drawing step of subjecting the solution-treated aluminum alloy material to wire-drawing processing, a softening step of subjecting the wire-drawing processed aluminum alloy material to a softening treatment in a short time within 10 seconds, and an aging step of subjecting the softening-treated aluminum alloy material to an aging treatment.

The present invention relates to a composite material based on aluminium and alumina, its method of manufacture, and a cable comprising said composite material as an electrical conductor element.

A method for manufacturing a cold-forged, extruded aluminum alloy tube includes: providing a primary material made of an aluminum alloy material, and a first cold extrusion apparatus; processing the primary material to form a preform; subjecting the preform to a homogeneous annealing by heating to a temperature of about 410 C. to 510 C. and then cooling to a temperature of about 160 C. to 200 C.; testing the hardness of the preform; immersing the preform in a lubricant which is a lipid having a viscosity index equal to or greater than 170, a flash point equal to or greater than 240 C., a pour point equal to or greater than 24 C., and a fire point equal to or greater than 255 C.; and subjecting the preform to cold extrusion.

A method for making a metal wire adapted for wire electrical discharge machining, comprises the steps of: A. Preparing a brass core wire having a diameter of at least 1.2 mm and having a zinc content of less than 40% by weight; B. Plating at least a coating material of zinc alloy having a zinc content of more than 75% by weight on the brass core wire to form a coating layer on the core wire so as to form a coarse wire by a spray plating process by atomizing and depositing a plurality of zinc alloy particles of the coating material on at least a surface portion of the brass core wire to form a plurality of cleavages or cavities on or in an outer surface of the coating layer of the coarse wire; and C. Drawing or stretching the coarse wire to obtain a metal wire product having a diameter ranging from 0.15 mm through 0.35 mm.

A steel wire has a microstructure that is completely ferritic, a mixture of ferrite and cementite or a mixture of ferrite and pearlite and has a weight content of carbon C such that C<0.05% and a weight content of chromium Cr such that Cr<12%. The process for drawing the wire comprises: at least one first uninterrupted series of steps of drawing the wire from a diameter D to a diameter d, at least one second uninterrupted series of steps of drawing the wire of diameter d to a diameter d, and one or more intermediate steps between the first and second uninterrupted series of steps of drawing the wire, the wire having a temperature less than or equal to 300 C. during the or each intermediate step.