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John Ferreol Monnot, metallurgist, the inventor of the first successful process for manufacturing copper-clad steel. Copper-clad steel (CCS), also known as copper-covered steel or the trademarked name Copperweld is a bi-metallic product, mainly used in the wire industry that combines the high mechanical strength of steel with the conductivity and corrosion resistance of copper.
Dofasco (today a division of Arcelor Mittal) acquired most of the LTV Copperweld assets, [5] including 50% of the bimetallic wire division, which would in turn be sold to a North Carolina businessman David S. Jones for $14.2 million in 2006 [6] and operated as Copperweld Bimetallics LLC.
To 15-7Φ5, for example, 5 said a single diameter 5.0mm of steel, 7Φ5 said seven of the steel wire to form a strand, and 15 that the diameter of each strand of 15mm, the total meaning is "one The beam consists of 7 strands of diameter 15 mm (each having a total diameter of about 15.24 mm, a dimensional deviation +0.40 -0.20; a diameter of ...
The characteristic impedance of twin lead is a function of the insulating material and its thickness, and the wire diameter and its spacing; in the most common type, 300 Ω twin-lead ribbon cable, the wire is usually AWG 20 or 22 (0.52 or 0.33 mm²), about 7.5 millimetres (0.30 in) apart.
The wire is coated with a range of polymeric insulations, including varnish, rather than the thicker plastic or other types of insulation commonly used on electrical wire. [5] High-purity oxygen-free copper grades are used for high-temperature applications in reducing atmospheres or in motors or generators cooled by hydrogen gas.
Litz wire is used for the helix and variometer in both helix houses. It consists of 9 × 5 × 5 × 27 (totaling 6,075) strands of #36 AWG (0.127 mm [0.0050 in] diameter) magnet wire and multiple layers of cotton, hemp, and plastic insulation, in a cable 19 mm (3 ⁄ 4 inch) in diameter, totaling 151,875 circular mils (0.7695619839 cm 2) of ...