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Platinum sterling (5609 views - Material Database)

Platinum Sterling is a registered trademark name of ABI Precious Metals, Inc. The trademark covers a range of alloys whose primary constituents are platinum and silver, primarily used in jewellery. The range of Platinum Sterling alloys was developed in 2003 by Marc Robinson, and its solder was created by Chuck Bennett.
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Platinum sterling

Platinum sterling

Platinum Sterling is a registered trademark name of ABI Precious Metals, Inc. The trademark covers a range of alloys whose primary constituents are platinum and silver, primarily used in jewellery.[1] The range of Platinum Sterling alloys was developed in 2003 by Marc Robinson, and its solder was created by Chuck Bennett.

Properties

The platinum is used to replace at least some of the copper present in a typical sterling silver alloy, which provides a greater light reflectivity (by refining the grain structure) and resistance to tarnish (thought to be caused by oxidation of copper) than standard sterling silver.

Platinum Sterling is a cheaper alternative to white gold.[citation needed] It is also allegedly hard wearing and very white and so does not require rhodium plating like white gold.[2]

Composition

The composition of Platinum Sterling is published; three alloys are commercially available, all containing standard 92.5% sterling silver and 1%, 3.5% or 5% platinum.[3] A small amount of gallium can also be added to the alloy to ease manufacturing.

The patent application for Platinum Sterling claims:

A metal alloy having a composition consisting essentially of 90.5–95.5% silver by weight, about 0.5–6% platinum by weight, about 0.7–4% copper by weight, about 0.1–2% gallium by weight, about 1–3% tin by weight, about 1–2.5% germanium by weight, about 0.5–4% zinc by weight, and about 0.1–0.2% silicon by weight.
— [4]

The claim also states:

...the preferred embodiments of the present invention provide a metal alloy comprising about 90.5–95.5% silver, about 0.5–6% platinum, about 0.7–4% copper, and about 0.1–2% gallium. In some embodiments, the alloy further comprises about 0.5–4% zinc, about 0–0.2% silicon, about 0–0.3% boron and about 0–1.5% indium. In other embodiments, the alloy further comprises about 0–3% tin and about 0–2.5% germanium.

See also


41xx steelAL-6XNAlGaAlloy 20AlnicoAlumel알루미늄알루미늄 합금알루미늄 청동Aluminium-lithium alloy아말감Argentium sterling silverArsenical bronzeArsenical copperBell metal베릴륨베릴륨구리Billon (alloy)BirmabrightBismanol비스무트황동BrightrayBritannia silver청동Bulat steelCalamine brass주철CelestriumChinese silverChromel크로뮴Chromium hydride코발트Colored goldConstantan구리Copper hydrideCopper–tungstenCorinthian bronzeCrown goldCrucible steelCunife백동Cymbal alloys다마스쿠스 강Devarda's alloyDoré bullion두랄루민Dutch metalElectrical steel호박금Elektron (alloy)ElinvarFernicoFerroalloy페로세륨FerrochromeFerromanganeseFerromolybdenumFerrosiliconFerrotitaniumFerrouraniumField's metalFlorentine bronzeGalfenolGalinstan갈륨Gilding metal유리GlucydurGoloidGuanín (bronze)GunmetalHaynes InternationalHepatizonHiduminiumHigh-speed steelHigh-strength low-alloy steelHydronaliumInconel인듐InvarIron–hydrogen alloyItalmaKanthal (alloy)Kovar리튬Magnalium마그네슘Magnox (alloy)MangalloyManganinMaraging steelMarine grade stainlessMartensitic stainless steelMegalliumMelchior (alloy)머큐리MischmetalMolybdochalkosMonelMu-metalMuntz metalMushet steel니크롬니켈Nickel hydride양은Nickel titaniumNicrosilNisil노르딕 골드Ormolu퍼멀로이Phosphor bronze선철Pinchbeck (alloy)플라스틱Plexiglas플루토늄Plutonium–gallium alloy칼륨Pseudo palladiumReynolds 531Rhodite로듐Rose's metal사마륨Samarium–cobalt magnetSanicro 28스칸듐Scandium hydrideShakudōSilver steel나트륨나크땜납Speculum metalSpiegeleisenSpring steelStaballoy스테인리스강강철StelliteStructural steelSupermalloySurgical stainless steelTerfenol-DTerne주석 (원소)타이타늄TombacTool steelTumbagaType metal우라늄VitalliumWeathering steel우드 합금Wootz steelY alloyZeron 100아연지르코늄Shibuichi스털링 실버Tibetan silverTitanium Beta CTitanium alloyTitanium hydrideGum metalTitanium goldTitanium nitride배빗메탈Britannia metal퓨터Queen's metalWhite metalUranium hydrideZamakZirconium hydride수소헬륨붕소질소산소플루오린메테인Mezzanine원자

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