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Kanthal (alloy) (11003 views - Material Database)

Kanthal is the trademark for a family of iron-chromium-aluminium (FeCrAl) alloys used in a wide range of resistance and high-temperature applications. Kanthal FeCrAl alloys consist of mainly iron, chromium (20–30%) and aluminium (4–7.5 %). The first Kanthal FeCrAl alloy was developed by Hans von Kantzow in Hallstahammar, Sweden. The alloys are known for their ability to withstand high temperatures and having intermediate electric resistance. As such, it is frequently used in heating elements. The trademark Kanthal is owned by Sandvik Intellectual Property AB.
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Kanthal (alloy)

Kanthal (alloy)

Kanthal is the trademark for a family of iron-chromium-aluminium (FeCrAl) alloys used in a wide range of resistance and high-temperature applications. Kanthal FeCrAl alloys consist of mainly iron, chromium (20–30%) and aluminium (4–7.5 %). The first Kanthal FeCrAl alloy was developed by Hans von Kantzow in Hallstahammar, Sweden. The alloys are known for their ability to withstand high temperatures and having intermediate electric resistance. As such, it is frequently used in heating elements. The trademark Kanthal is owned by Sandvik Intellectual Property AB.

Characteristics

For heating, resistance wire must be stable in air when hot. Kanthal FeCrAl alloy forms a protective layer of aluminum oxide (alumina).[1] Aluminium oxide is an electrical insulator but has a relatively high thermal conductivity; special techniques may be required to make good electrical connections.

Ordinary Kanthal FeCrAl alloy has a melting point of 1,500 °C (2,730 °F). Special grades can be used as high as 1,425 °C (2,597 °F).[2]

Uses

Kanthal is used in heating elements due to its flexibility, durability and tensile strength. Its uses are widespread, with it being used in toasters, home and industrial heaters and diffusion heaters (used in the making of crystalline silicon).[3][4]

Recently, Kanthal has been used in electronic cigarettes as a heating coil. Unlike alternative types of metal such as Nichrome, Kanthal is durable enough to withstand the temperatures needed, but flexible and cheap enough to be practical.[5]

Kanthal comes in standardised gauging, with higher numbers being thinner and lower being thicker.

See also


AlGa鋁鎳鈷合金鋁合金Aluminium bronzeAluminium-lithium alloyArsenical bronzeArsenical copperBell metalBeryllium copperBillon (alloy)BirmabrightBismanol黃銅青铜Calamine brass铸铁Chinese silverChromium hydride白金 (合金)康銅氢化亚铜Copper–tungstenCorinthian bronzeCrown goldCunife白铜Cymbal alloysDevarda's alloy杜拉鋁Dutch metal琥珀金ElinvarFernicoFerroalloyFerroceriumFerrochromeFerromanganeseFerromolybdenumFerrosiliconFerrotitaniumFerrouraniumField's metalFlorentine bronzeGalfenolGalinstanGilding metal玻璃GlucydurGuanín (bronze)GunmetalHepatizonHiduminiumHydronalium不變鋼Iron–hydrogen alloyItalma镁铝合金ManganinMegalliumMelchior (alloy)MercuryMolybdochalkosMuntz metalNichromeNickel silver北歐金OrmoluPhosphor bronze生鐵Pinchbeck (alloy)塑料Plexiglas銠金礦Rose's metalShakudōSpeculum metal不鏽鋼Stellite钢结构TombacTumbaga維塔立合金伍德合金Y alloyKovarStaballoyBulat steelCrucible steel41xx steel大馬士革鋼Mangalloy高速鋼Mushet steel马氏体时效钢High-strength low-alloy steelReynolds 531电工钢Spring steelAL-6XNCelestriumAlloy 20Marine grade stainless马氏体不锈钢Sanicro 28Surgical stainless steelZeron 100Silver steelTool steel耐候钢烏茲鋼銲料TerneType metalElektron (alloy)汞齊Magnox (alloy)AlumelBrightrayChromelHaynes International英高鎳合金MonelNicrosilNisilNickel titaniumΜ合金透磁合金超導磁率合金Nickel hydridePlutonium–gallium alloy钠钾合金MischmetalTerfenol-DPseudo palladiumScandium hydride釤鈷磁鐵Argentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichiSterling silverTibetan silverTi Beta-C.Titanium alloy氢化钛Gum metalTitanium gold氮化钛巴氏合金Britannia metalPewterQueen's metalWhite metal氢化铀ZamakZirconium hydride吸盘甲烷Mezzanine原子

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