{"product_id":"rich-yellow-18-22k-master-alloy-fabricating-casting","title":"Rich Yellow 18-22 Investment Casting \u0026 Fabricating Master Alloy-Suitable for Granulation-Per Troy Ounce (20DWT)","description":"\u003cp\u003eThis rich, deep yellow master alloy is specially formulated for jewelers working in 18K–22K gold fabrication and investment casting. Designed with granulation techniques in mind, it contains no de-oxidizer, making it particularly well-suited for traditional granulation work. The alloy produces a smooth surface with high luster and performs exceptionally in sheet, wire, and tube making. While optimized for fabrication, it is also suitable for investment casting. Sold per troy ounce (20 pennyweights \/ 31.1 grams). \u003cem\u003eContains no gold.\u003c\/em\u003e\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eSpecially formulated for granulation — contains no de-oxidizer\u003c\/li\u003e\n\u003cli\u003eDeep, rich yellow color with smooth surface and high luster\u003c\/li\u003e\n\u003cli\u003eExcellent for sheet, wire, and tube fabrication\u003c\/li\u003e\n\u003cli\u003eSuitable for investment casting as well as fabrication\u003c\/li\u003e\n\u003cli\u003eBest performance as an 18K alloy\u003c\/li\u003e\n\u003cli\u003eContains no gold\u003c\/li\u003e\n\u003cli\u003eNote: Proprietary metals are present in the formulation and are not fully disclosed in the composition listing\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eRecommended Karat Range\u003c\/th\u003e\n\u003ctd\u003e18K–22K\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePrimary Application\u003c\/th\u003e\n\u003ctd\u003eFabrication (sheet, wire, tube); investment casting\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eGranulation Suitable\u003c\/th\u003e\n\u003ctd\u003eYes — no de-oxidizer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eContains Gold\u003c\/th\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCopper (Cu)\u003c\/th\u003e\n\u003ctd\u003e46.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSilver (Ag)\u003c\/th\u003e\n\u003ctd\u003e50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eZinc (Zn)\u003c\/th\u003e\n\u003ctd\u003e3.75%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSold By\u003c\/th\u003e\n\u003ctd\u003eTroy ounce (20 DWT \/ 31.1 g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eNotes\u003c\/h3\u003e\u003cp\u003eThis alloy contains proprietary metals in addition to the listed composition. The disclosed percentages (Cu 46.25%, Ag 50%, Zn 3.75%) do not represent the complete formulation. Sold by the troy ounce, equal to 20 pennyweights or 31.1 grams.\u003c\/p\u003e","brand":"Otto Frei","offers":[{"title":"Default Title","offer_id":43581640245462,"sku":"846-175ND","price":91.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9832\/0342\/files\/rich-yellow-18-22-investment-casting-and-fabricating-master-alloy-suitable-for-granulation-per-troy-ounce-20dwt-otto-frei.jpg?v=1719957474","url":"https:\/\/www.ottofrei.com\/products\/rich-yellow-18-22k-master-alloy-fabricating-casting","provider":"Otto Frei","version":"1.0","type":"link"}