![]() Nickel chromium wire is one of the oldest recorded alloys used for resistance heating. Distributor pricing is typically indexed to market prices for nickel.Need to use a resistance wire in your manufacturing needs? As one of the best providers of specialty wire & cable on the web, Arcor Electronics is a premier manufacturer, supplier and distributor of nichrome wire. The alloy price is controlled by the more expensive nickel content. ![]() Other areas of usage include motorcycle mufflers, in certain areas in the microbiological lab apparatus, as the heating element of plastic extruders by the RepRap 3D printing community, in the solar panel deployment mechanism of spacecraft LightSail-A, and as the heating coils of electronic cigarettes. Nichrome wire can be used as an alternative to platinum wire for flame testing by colouring the non-luminous part of a flame to detect cations such as sodium, potassium, copper, calcium, etc. ![]() Nichrome wire is used for its ability to withstand the high temperatures that occur when clay work is fired in a kiln. Nichrome wire is commonly used in ceramic as an internal support structure to help some elements of clay sculptures hold their shape while they are still soft. Industrial and hobby hot-wire foam cutters use nichrome wire. Nichrome is used in the explosives and fireworks industry as a bridgewire in electric ignition systems, such as electric matches and model rocket igniters. Typically, nichrome is wound in coils to a certain electrical resistance, and when current is passed through it the Joule heating produces heat. Any variations are due to different percentages of nickel or chromium.īecause of its low cost of manufacture, strength, ductility, resistance to oxidation, stability at high temperatures, and resistance to the flow of electrons, nichrome is widely used in electric heating elements in applications such as hair dryers and heat guns. Figures given are representative of typical material and are accurate to expressed significant figures. The properties of nichrome vary depending on its alloy. Nichrome alloys are known for their high mechanical strength and their high creep strength. Nichrome wire, when heated to red-hot temperatures, develops an outer layer of chromium oxide, which is thermodynamically stable in air, is mostly impervious to oxygen, and protects the heating element from further oxidation. When heated in air, most metals then oxidize quickly, become brittle and break. Īlmost any conductive wire can be used for heating, but most metals conduct electricity with great efficiency, requiring them to be formed into very thin and delicate wires to create enough resistance to generate heat. Nichrome is consistently silvery in colour, is corrosion-resistant, has a high melting point of about 1,400 ☌ (2,550 ☏), and has an electrical resistivity of around 112 μΩ–cm, which is around 66 times higher resistivity than copper of 1.678 μΩ–cm. Patented in 1906 by Albert Marsh (US patent 811,859 ), nichrome is the oldest documented form of resistance heating alloy.Ī common nichrome alloy is 80% nickel and 20% chromium by mass, but there are many other combinations of metals for various applications. ![]() Nichrome (also known as NiCr, nickel-chromium or chromium-nickel) is a family of alloys of nickel and chromium (and occasionally iron ) 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. Family of alloys of mainly nickel and chromium
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