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Platinum sterling (5545 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 20Aimant AlNiCoAlumelAluminiumAluminium alloyCuproaluminiumAluminium-lithium alloyAmalgame (métallurgie)Argentium sterling silverBronze arséniéArsenical copperBell metalBérylliumBronze au bérylliumBillon (alliage)BirmabrightBismanolBismuthLaitonBrightrayArgent BritanniaBronzeBulat steelCalamine brassFonte (métallurgie)CelestriumChinese silverChromelChromeChromium hydrideCobaltColored goldConstantanCuivreCopper hydrideCopper–tungstenBronze de CorintheCrown goldAcier au creusetCunifeCupronickelCymbal alloysAcier de DamasAlliage de DevardaDoré bullionAlliages d'aluminium pour corroyage#Série 2000 (aluminium cuivre)Dutch metalFer douxÉlectrumElektronÉlinvarFernicoFerroalliagePierre à briquetFerrochromeFerromanganèseFerromolybdèneFerrosiliciumFerrotitaneFerrouraniumField's metalFlorentine bronzeGalfenolGalinstanGalliumLaiton rougeVerreGlucydurOrGoloidGuanín (bronze)GunmetalHaynes InternationalHepatizonHiduminiumAcier rapideHigh-strength low-alloy steelHydronaliumInconelIndiumInvarFerHydrure de ferItalmaKanthalKovarPlombLithiumMagnaliumMagnésiumMagnox (alloy)MangalloyManganinAcier maragingMarine grade stainlessMartensitic stainless steelMegalliumMaillechortMercuryMischmétalMolybdochalkosMonelMu-métalMuntz metalMushet steelNichromeNickelHydrure de nickelMaillechortNitinolNicrosilNisilOr nordiqueDorure#Dorure au mercurePermalloyBronze phosphoreuxFonte brutePinchbeck (alloy)Matière plastiquePlexiglasPlutoniumAlliage plutonium-galliumPotassiumPseudo palladiumReynolds 531rhoditeRhodiumRose's metalSamariumAimant samarium-cobaltSanicro 28ScandiumScandium hydrideShakudōArgentSilver steelSodiumNaKSolderSpeculum metalSpiegeleisenSpring steelStaballoyAcier inoxydableAcierStellite (alliage)Structural steelSupermalloySurgical stainless steelTerfenol-DTerneÉtainTitaneTombacAcier à outilsTumbagaPlomb typographiqueUraniumVitalliumAcier CortenMétal de WoodWootzY alloyZeron 100ZincZirconiumShibuichiArgent 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

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