powered by CADENAS

Social Share

Elinvar (8530 views - Material Database)

Elinvar is a nickel-iron alloy notable for having a modulus of elasticity which does not change much with temperature changes. The name is a contraction of the French elasticité invariable (elastically invariable). It was invented by Charles Édouard Guillaume, a Swiss physicist who also invented Invar, another alloy of nickel and iron with very low thermal expansion. Guillaume won the 1920 Nobel Prize in Physics for these discoveries, which shows how important these alloys were for scientific instruments. Elinvar consists of 59% iron, 36% nickel, and 5% chromium. It is almost nonmagnetic and corrosion resistant. Other variations of elinvar alloy are Iron and cobalt based ferromagnetic elinvar alloy Manganese and chromium based antiferromagnetic elinvar alloy Palladium based non magnetic elinvar alloy The largest use of Elinvar was in balance springs for mechanical watches and chronometers. A major cause of inaccuracy in watches and clocks was that ordinary steels used in springs lost elasticity slightly as the temperature increased, so the balance wheel would oscillate more slowly back and forth, and the clock would lose time. Chronometers and precision watches required complex temperature-compensated balance wheels for accurate timekeeping. Springs made of Elinvar, and other low temperature coefficient alloys such as Nivarox that followed, were not affected by temperature, so they made the temperature-compensated balance wheel obsolete.
Go to Article

Elinvar

Elinvar

Elinvar is a nickel-iron alloy notable for having a modulus of elasticity which does not change much with temperature changes. The name is a contraction of the French elasticité invariable (elastically invariable). It was invented by Charles Édouard Guillaume, a Swiss physicist who also invented Invar, another alloy of nickel and iron with very low thermal expansion. Guillaume won the 1920 Nobel Prize in Physics for these discoveries, which shows how important these alloys were for scientific instruments.

Elinvar consists of 59% iron, 36% nickel, and 5% chromium. It is almost nonmagnetic and corrosion resistant.

Other variations of elinvar alloy are

Iron and cobalt based ferromagnetic elinvar alloy
Manganese and chromium based antiferromagnetic elinvar alloy
Palladium based non magnetic elinvar alloy

The largest use of Elinvar was in balance springs for mechanical watches and chronometers. A major cause of inaccuracy in watches and clocks was that ordinary steels used in springs lost elasticity slightly as the temperature increased, so the balance wheel would oscillate more slowly back and forth, and the clock would lose time. Chronometers and precision watches required complex temperature-compensated balance wheels for accurate timekeeping. Springs made of Elinvar, and other low temperature coefficient alloys such as Nivarox that followed, were not affected by temperature, so they made the temperature-compensated balance wheel obsolete.



AlGaAlnicoAluminijAluminium alloyAluminium bronzeAluminium-lithium alloyArsenical bronzeArsenical copperBell metalBerilijBeryllium copperBillon (alloy)BirmabrightBismanolBizmutMjedBroncaCalamine brassChinese silverKromChromium hydrideKobaltColored goldKonstantan (legura)Bakar (element)Copper hydrideCopper–tungstenCorinthian bronzeCrown goldCunifeKuproniklCymbal alloysDevarda's alloyDuraluminijDutch metalElektrumFlorentine bronzeGalfenolGalinstanGalijGilding metalStakloGlucydurZlatoGuanín (bronze)GunmetalCrna korintska broncaHiduminiumHydronaliumIndijŽeljezoItalmaOlovo (element)MagnalijMagnezijManganinMegalliumMelchior (alloy)MercuryMolybdochalkosMuntz metalNichromeNikalNovo srebroNordijsko zlatoOrmoluPhosphor bronzePinchbeck (alloy)PlastikaPlexiglasPlutonijKalijRhoditeRodijRose's metalSamarijSkandijShakudoSrebroNatrijSpeculum metalNehrđajući čelikČelikStelliteKonstrukcijski čelikKositarTitanijTombacTumbagaUranijVitalliumWood's metalY alloyCinkCirkonijField's metalFernicoFeroslitineFerroceriumFerrochromeFerromanganeseFerromolybdenumFerrosiliconFerrotitaniumFerrouraniumInvarLijevano željezoIron–hydrogen alloySirovo željezoKanthal (alloy)KovarStaballoySpiegeleisenBulat steelČelični lijev41xx steelDamascirani čelikMangalloyBrzorezni čelikMushet steelMaraging čelikMikrolegirani čelikReynolds 531Electrical steelČelik za oprugeAL-6XNCelestriumAlloy 20Marine grade stainlessMartensitic stainless steelSanicro 28Surgical stainless steelZeron 100Silver steelAlatni čelikCOR-TEN čelikWootz steelSolderTerneType metalElektron (alloy)Amalgam (kemija)Magnox (alloy)AlumelBrightrayChromelHaynes InternationalInconelMonelNicrosilNisilNickel titaniumMu-metalPermalloySupermalloyNickel hydridePlutonium–gallium alloySodium-potassium alloyMischmetalLitijTerfenol-DPseudo palladiumScandium hydrideSamarium–cobalt magnetArgentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichiSterling silverTibetan silverTitanium Beta CTitanijeve legureTitanium hydrideGum metalTitanium goldTitanijev nitridBabbitt (alloy)Britanija metalTvrdi kositarQueen's metalWhite metalUranium hydrideZamakZirconium hydrideVodikHelijBor (element)DušikKisikFluorMetanMezzanineAtom

This article uses material from the Wikipedia article "", which is released under the Creative Commons Attribution-Share-Alike License 3.0. There is a list of all authors in Wikipedia

Material Database

database,rohs,reach,compliancy,directory,listing,information,substance,material,restrictions,data sheet,specification