powered by CADENAS

Social Share

Mushet steel (5604 views - Material Database)

Mushet steel, also known as Robert Mushet's Special Steel (RMS), self-hardening steel and air-hardening steel, is considered the first tool steel and air-hardening steel. It was invented in 1868 by Robert Forester Mushet. Prior to Mushet steel, steel had to be quenched to harden it. It later led to the discovery of high speed steel.
Go to Article

Mushet steel

Mushet steel

Mushet steel, also known as Robert Mushet's Special Steel (RMS), self-hardening steel and air-hardening steel,[1] is considered the first tool steel and air-hardening steel.[2] It was invented in 1868 by Robert Forester Mushet. Prior to Mushet steel, steel had to be quenched to harden it.[1] It later led to the discovery of high speed steel.[3]

Properties

The chemical composition of Mushet steel varied; tungsten was the main alloying constituent, which ranged between 4 and 12%, while manganese (2–4%) and carbon (1.5–2.5%) were the secondary alloying constituents. A typical sample contained 9% tungsten, 2.5% manganese, and 1.85% carbon.[2]

Mushet steel was harder than standard water quenched steel. It was found that Mushet steel could be best hardened by submitting it to an air blast after forging.[1]

Mushet steel is non-magnetic.[2][why?]

Use

Mushet steel was primarily used in machine tools due to its ability to retain its hardness at high temperatures. In 1894, Frederick Winslow Taylor conducted machining comparison tests between Mushet steel and high carbon tool steel. He found that it could cut 41 to 47% faster on hard tire steel forgings and approximately 90% faster on mild steels. He also found that if a stream of water was used as a cutting fluid the cutting speed could be increased by 30%. After Taylor's tests results were published Mushet and other self-hardening steels became popular in machine tools.[3] Prior to Taylor's tests Mushet steel was often just used to increase the time between regrinds, take larger cuts, or machine harder materials.[1][2]

In 1899 and 1900,[4] Taylor and Maunsel White were experimenting with hardening processes for Mushet steel and other self-hardening steels. They discovered if the steel is heated to near its melting point it creates a more durable metal. The metal will retain its hardness up to a red heat. This type of hardened self-hardening steel was the first high speed steel.[3]

  1. ^ a b c d Becker 1910, pp. 13–14.
  2. ^ a b c d Stoughton 1908, pp. 408–409.
  3. ^ a b c Oberg & Jones 1918, pp. 278–279.
  4. ^ Kanigel 1997.

Bibliography


41xx steelAlGaAimant AlNiCoAluminiumAluminium alloyCuproaluminiumAluminium-lithium alloyBronze arséniéArsenical copperBell metalBérylliumBronze au bérylliumBillon (alliage)BirmabrightBismanolBismuthLaitonBronzeBulat steelCalamine brassFonte (métallurgie)Chinese silverChromeChromium hydrideCobaltColored goldConstantanCuivreCopper hydrideCopper–tungstenBronze de CorintheCrown goldAcier au creusetCunifeCupronickelCymbal alloysAcier de DamasAlliage de DevardaAlliages d'aluminium pour corroyage#Série 2000 (aluminium cuivre)Dutch metalÉlectrumÉlinvarFernicoFerroalliagePierre à briquetFerrochromeFerromanganèseFerromolybdèneFerrosiliciumFerrotitaneFerrouraniumField's metalFlorentine bronzeGalfenolGalinstanGalliumLaiton rougeVerreGlucydurOrGuanín (bronze)GunmetalHepatizonHiduminiumAcier rapideHydronaliumIndiumInvarFerHydrure de ferItalmaKanthalKovarPlombMagnaliumMagnésiumMangalloyManganinMegalliumMaillechortMercuryMolybdochalkosMuntz metalNichromeNickelMaillechortOr nordiqueDorure#Dorure au mercureBronze phosphoreuxFonte brutePinchbeck (alloy)Matière plastiquePlexiglasPlutoniumPotassiumrhoditeRhodiumRose's metalSamariumScandiumShakudōArgentSodiumSpeculum metalSpiegeleisenStaballoyAcier inoxydableAcierStellite (alliage)Structural steelÉtainTitaneTombacTumbagaUraniumVitalliumMétal de WoodY alloyZincZirconiumAcier maragingHigh-strength low-alloy steelReynolds 531Fer douxSpring steelAL-6XNCelestriumAlloy 20Marine grade stainlessMartensitic stainless steelSanicro 28Surgical stainless steelZeron 100Silver steelAcier à outilsAcier CortenWootzSolderTernePlomb typographiqueElektronAmalgame (métallurgie)Magnox (alloy)AlumelBrightrayChromelHaynes InternationalInconelMonelNicrosilNisilNitinolMu-métalPermalloySupermalloyHydrure de nickelAlliage plutonium-galliumNaKMischmétalLithiumTerfenol-DPseudo palladiumScandium hydrideAimant samarium-cobaltArgentium sterling silverArgent BritanniaDoré bullionGoloidPlatinum sterlingShibuichiArgent sterlingTibetan silverTitanium Beta CAlliage de titaneHydrure de titaneGum metalTitanium goldNitrure de titaneBabbitt (alloy)BritanniumAlliage plomb-étainQueen's metalWhite metalHydrure d'uranium(III)ZamakZirconium hydrideHydrogèneHéliumBoreAzoteOxygèneFluorMéthaneMezzanine (architecture)Atome

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