powered by CADENAS

Social Share

Mushet steel (5669 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 steelAlGaAlnico알루미늄알루미늄 합금알루미늄 청동Aluminium-lithium alloyArsenical bronzeArsenical copperBell metal베릴륨베릴륨구리Billon (alloy)BirmabrightBismanol비스무트황동청동Bulat steelCalamine brass주철Chinese silver크로뮴Chromium hydride코발트Colored goldConstantan구리Copper hydrideCopper–tungstenCorinthian bronzeCrown goldCrucible steelCunife백동Cymbal alloys다마스쿠스 강Devarda's alloy두랄루민Dutch metal호박금ElinvarFernicoFerroalloy페로세륨FerrochromeFerromanganeseFerromolybdenumFerrosiliconFerrotitaniumFerrouraniumField's metalFlorentine bronzeGalfenolGalinstan갈륨Gilding metal유리GlucydurGuanín (bronze)GunmetalHepatizonHiduminiumHigh-speed steelHydronalium인듐InvarIron–hydrogen alloyItalmaKanthal (alloy)KovarMagnalium마그네슘MangalloyManganinMegalliumMelchior (alloy)머큐리MolybdochalkosMuntz metal니크롬니켈양은노르딕 골드OrmoluPhosphor bronze선철Pinchbeck (alloy)플라스틱Plexiglas플루토늄칼륨Rhodite로듐Rose's metal사마륨스칸듐Shakudō나트륨Speculum metalSpiegeleisenStaballoy스테인리스강강철StelliteStructural steel주석 (원소)타이타늄TombacTumbaga우라늄Vitallium우드 합금Y alloy아연지르코늄Maraging steelHigh-strength low-alloy steelReynolds 531Electrical steelSpring steelAL-6XNCelestriumAlloy 20Marine grade stainlessMartensitic stainless steelSanicro 28Surgical stainless steelZeron 100Silver steelTool steelWeathering steelWootz steel땜납TerneType metalElektron (alloy)아말감Magnox (alloy)AlumelBrightrayChromelHaynes InternationalInconelMonelNicrosilNisilNickel titaniumMu-metal퍼멀로이SupermalloyNickel hydridePlutonium–gallium alloy나크Mischmetal리튬Terfenol-DPseudo palladiumScandium hydrideSamarium–cobalt magnetArgentium sterling silverBritannia silverDoré bullionGoloidPlatinum sterlingShibuichi스털링 실버Tibetan silverTitanium Beta CTitanium alloyTitanium hydrideGum metalTitanium goldTitanium nitride배빗메탈Britannia metal퓨터Queen's metalWhite metalUranium hydrideZamakZirconium hydride수소헬륨붕소질소산소플루오린메테인Mezzanine원자

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