Master Alloys
Master alloys are the metal you combine with fine gold or fine silver to reach a working karat or .925 sterling. None of them contains gold. Otto Frei stocks yellow, white, and pink rose alloys for investment casting and for fabrication, several formulated for stone in place work, plus copper and brass casting grain and a manganese bronze casting alloy. Most are sold by the troy ounce, 20 pennyweights.
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2 Ounce Pack-Re-Cast-It Gold Alloy Refresher-Replenisher
Otto Frei5.0 / 5.0
1 Revisione
Re-Cast-It is an alloy additive designed for recasting old or scrap yellow gold. It does not contain gold and is not a substitute for gold, but whe...
Visualizza tutti i dettagliDark Yellow 9-14 Investment Casting Master Alloy For Stone In Place Casting-Per Troy Ounce (20 DWT)
Otto FreiThis Dark Yellow Investment Casting Master Alloy is formulated for alloying with pure gold to produce 9K to 14K casting alloy, with specific perfor...
Visualizza tutti i dettagliStandard Yellow 9-14 Investment Casting Master Alloy-Per Troy Ounce (20DWT)
Otto FreiA reliable, professional-grade investment casting master alloy formulated to produce a darker yellow tone ideal for 10K–14K gold alloying. This all...
Visualizza tutti i dettagliRich Yellow 18-22 Investment Casting & Fabricating Master Alloy-Suitable for Granulation-Per Troy Ounce (20DWT)
Otto FreiThis rich, deep yellow master alloy is specially formulated for jewelers working in 18K–22K gold fabrication and investment casting. Designed with ...
Visualizza tutti i dettagliRich Yellow 18-22 Investment Casting Master Alloy-Per Troy Ounce (20DWT)
Otto FreiRich Yellow 18–22 Investment Casting Master Alloy delivers a deep, rich yellow color in the classic European style. Featuring a smooth surface and ...
Visualizza tutti i dettagliRich Yellow 9-14 Investment Casting Stone-In-Place-Master Alloy-Per Troy Ounce (20DWT)
Otto FreiRich Yellow Stone-in-Place Investment Casting Master Alloy is formulated for jewelers who require a high-reusability, tarnish-resistant alloy suita...
Visualizza tutti i dettagliLight Yellow 9-14 Investment Casting Master Alloy-Per Troy Ounce (20DWT)
Otto FreiA popular all-around investment casting master alloy formulated for producing 9–14k gold. This alloy contains more silver than comparable formulati...
Visualizza tutti i dettagliStandard Yellow 14-18 Fabrication & Enameling Master Alloy-No Zinc
Otto FreiThis standard yellow master alloy is formulated for 14K and 18K gold fabrication and for glass enameling applications. Because it contains no zinc,...
Visualizza tutti i dettagliGreen Yellow 9-18 Investment Casting Master Alloy Per Troy Ounce
Otto FreiThis master alloy produces a distinctive green-yellow shade of gold thanks to its very high silver content. Formulated for investment casting, it d...
Visualizza tutti i dettagliBrass Casting Grain-Sold by the Troy Ounce
Otto Frei1.0 / 5.0
1 Revisione
An ideal choice for sample lines and production casting, this brass casting grain is a clean two-component alloy of copper and zinc — nothing else....
Visualizza tutti i dettagliCopper Casting Grain
Otto Frei5.0 / 5.0
1 Revisione
This hard-to-find .999 pure copper casting grain is used for alloying with gold and silver. High-purity copper ensures consistent, repeatable resul...
Visualizza tutti i dettagliUltra White 9-18 Investment Casting Master Alloy
Otto FreiThe Ultra White 9–18 Investment Casting Master Alloy is a nickel-based white gold master alloy formulated for investment casting and fabrication ap...
Visualizza tutti i dettagliUltra White 14-18 Fabrication Master Alloy Per Troy Ounce
Otto FreiUltra White is a nickel-based fabrication master alloy designed for making 14K and 18K white gold alloys. It offers high tensile strength and conta...
Visualizza tutti i dettagliUltra White For Making 10-18 White Multi-Purpose Alloy-Per Troy Ounce (20 DWT)
Otto FreiThis ultra white fabrication alloy is nickel-based and contains no gold and no silver. Designed as a multi-purpose master alloy for both casting an...
Visualizza tutti i dettagliWhite 9-18 Investment Casting Master Alloy-Per Troy Ounce (20DWT)
Otto FreiThis nickel-based white master alloy — previously called White Century — is formulated for investment casting and fabrication of 9K–18K white gold....
Visualizza tutti i dettagliDark Pink Rose 9-18K Fabrication Rolling Master Alloy-Per Troy Ounce (20DWT)
Otto FreiCopper gives rose and pink gold alloys their characteristic warm hue, but it also reduces workability — making setting and fabrication more challen...
Visualizza tutti i dettagliDark Pink-Rose 9-18 All Purpose Master Alloy-Sold By the Troy Ounce (20DWT)
Otto FreiThe Dark Pink-Rose 9–18 All Purpose Master Alloy is a professional-grade casting and fabrication alloy designed for jewelers working across a wide ...
Visualizza tutti i dettagliPink Solder Alloys-For Making 18K Pink Solder-Easy, Medium & Hard
Otto FreiThese solder alloys are formulated to allow jewelers to make their own 18K pink solder in-house. These alloys contain no gold. To achieve 18K gold,...
Visualizza tutti i dettagliManganese Bronze Casting Alloy by the Pound
Otto FreiJewelers Manganese Bronze is a casting alloy developed to provide jewelry casters with a base metal suitable for both centrifugal and vacuum castin...
Visualizza tutti i dettagliUltra Rich Reddish Yellow 9-14 Investment Casting Stone In Place Master Alloy-Contains No Gold Per Troy Ounce (20 DWT)
Otto FreiThe Ultra Rich Reddish Yellow Master Alloy is a high-performance investment casting alloy engineered for stone-in-place casting applications. Part ...
Visualizza tutti i dettagliBright Yellow 9-14 Investment Casting Master Alloy-Contains No Gold Per Troy Ounce (20 DWT)
Otto FreiThis bright yellow master alloy is formulated for investment casting and open torch melting, producing a vivid yellow color when alloyed with fine ...
Visualizza tutti i dettagliEuropean Greenish Yellow 9-14 Investment Casting Master Alloy-Contains No Gold Per Troy Ounce (20 DWT)
Otto FreiThis European-shade master alloy is formulated for investment casting and delivers a distinctive greenish yellow color when alloyed with fine gold ...
Visualizza tutti i dettagliDeep Yellow 18 Casting Master Alloy-Sold Per Troy Ounce (20DWT)
Otto FreiThe Deep Yellow 790 Casting Master Alloy delivers a deep, rich yellow color with a European style finish. Formulated specifically as an 18K casting...
Visualizza tutti i dettagliGreenish Yellow 18 Casting Master Alloy-Per Troy Ounce (20DWT)
Otto FreiThis Greenish Yellow 18K Casting Master Alloy delivers a distinctive European-style greenish yellow color with the highest silver content of all 18...
Visualizza tutti i dettagliPremium Pink 9-14 Casting Master Alloy-Sold Per Troy Ounce (20DWT)
Otto FreiPremium Pink 9–14K Casting Master Alloy is formulated for jewelers and casters who demand a rich, consistent pink color result in gold alloys rangi...
Visualizza tutti i dettagliAll Purpose Pink 9-18 Casting/Fabricating Master Alloy-Sold Per Troy Ounce (20DWT)
Otto FreiAll Purpose Pink 9–18 Casting & Fabricating Master Alloy is a versatile master alloy formulated to cover a wide range of duties in both casting...
Visualizza tutti i dettagliSterling-Classic White Alloy
Otto FreiA general-purpose master alloy for alloying with pure silver to produce .925 sterling silver. Sterling-Classic White Alloy delivers a classic white...
Visualizza tutti i dettagliSterling-Super White Alloy
Otto FreiSterling-Super White Alloy is a general-purpose master alloy designed for alloying with pure silver to produce .925 sterling silver. Suitable for b...
Visualizza tutti i dettagliUltra White 9K-18K Stone-In-Place Nickel Alloy
Otto FreiUltra White 9K–18K Stone-In-Place Investment Casting Master Alloy is formulated for excellent fluidity during casting and fabrication applications....
Visualizza tutti i dettagliPremium White 9-18 Silicon Free Casting Master Alloy-Per Troy Ounce (20DWT)
Otto FreiPremium White 9–18 Silicon Free Casting Master Alloy is a professional-grade white gold master alloy formulated for both casting and fabrication ap...
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