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Nichrome (also known as NiCr, nickel-chromium or chromium-nickel) is a family of alloys of nickel and chromium (and occasionally iron [1]) commonly used as resistance wire, heating elements in devices like toasters, electrical kettles and space heaters, in some dental restorations (fillings) and in a few other applications.
Albert Marsh (August 16, 1877 – September 17, 1944) was an American metallurgist.In 1905 he co-invented the first metallic alloy from which a high-resistance wire could be made that could be used as a durable and safe heating element.
Nichrome, a non-magnetic 80/20 alloy of nickel and chromium, is the most common resistance wire for heating purposes because it has a high resistivity and resistance to oxidation at high temperatures, up to 1,400 °C (2,550 °F). When used as a heating element, resistance wire is usually wound into coils.
Characteristics and properties of chromel (Ni, 90%; Cr, 10% by weight) Characteristic Value Temperature coefficient: 0.00032 K −1: Electrical resistivity
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Nichrome is used as resistance wire for heating elements in things like toasters and space heaters. These uses make chromium a strategic material. Consequently, during World War II, U.S. road engineers were instructed to avoid chromium in yellow road paint, as it "may become a critical material during the emergency". [73]
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Magyar may refer to: Hungarians; Hungarian language; Magyar tribes, fundamental political units of Hungarians between the period of leaving the Ural Mountains and the ...