{"product_id":"ferro-frit-3249","title":"Ferro Frit 3249","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cspan\u003e\"No potter or manufacturer should be without this type of \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/frit\"\u003efrit\u003c\/a\u003e\u003cspan\u003e (despite how expensive it is). Every frit manufacturer will be making a magnesia \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/borosilicate\"\u003eborosilicate\u003c\/a\u003e\u003cspan\u003e like this (because it is needed to lower the \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/co-efficient+of+thermal+expansion\"\u003ethermal expansion\u003c\/a\u003e\u003cspan\u003e of glazes and glasses).\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003ca href=\"https:\/\/digitalfire.com\/material\/369\"\u003eFrit 3249\u003c\/a\u003e\u003cspan\u003e, from Ferro (now Vibrantz), is an example of this type. It is valuable because it introduces a form of \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/oxide\/mgo\"\u003eMgO\u003c\/a\u003e\u003cspan\u003e (the lowest expansion \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/flux\"\u003eflux\u003c\/a\u003e\u003cspan\u003e) that will melt at much lower temperatures than MgO-sourcing raw materials like \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/material\/273\"\u003edolomite\u003c\/a\u003e\u003cspan\u003e or \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/material\/1620\"\u003etalc\u003c\/a\u003e\u003cspan\u003e (trading some of the \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/co-efficient+of+thermal+expansion\"\u003ehigh-expansion\u003c\/a\u003e\u003cspan\u003e fluxes in a glaze for MgO is the most effective way to reduce glaze thermal expansion). Also, high MgO is the \u003c\/span\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/mechanism\"\u003emechanism\u003c\/a\u003e\u003cspan\u003e of some of the best matte glazes and a frit like this is often the best way to source it.\" - Source Digital Fire\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable class=\"table table-bordered table-sm\"\u003e\n\u003cthead class=\"thead-light\"\u003e\n\u003ctr\u003e\n\u003cth class=\"text-center\" scope=\"col\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/oxide\"\u003eOxide\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"text-center\" scope=\"col\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/analysis\"\u003eAnalysis\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"text-center\" scope=\"col\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/formula\"\u003eFormula\u003c\/a\u003e\u003c\/th\u003e\n\u003cth class=\"text-center\" scope=\"col\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/formula\"\u003eTolerance\u003c\/a\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/oxide\/cao\"\u003eCaO\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e3.50%\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e0.17\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/oxide\/mgo\"\u003eMgO\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e12.20%\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e0.83\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/oxide\/b2o3\"\u003eB2O3\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e28.90%\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e1.14\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/oxide\/al2o3\"\u003eAl2O3\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e13.30%\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e0.36\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"label\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/oxide\/sio2\"\u003eSiO2\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e42.10%\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e1.92\u003c\/td\u003e\n\u003ctd class=\"text-right\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\"\u003eOxide Weight\u003c\/td\u003e\n\u003ctd colspan=\"2\" class=\"text-right\"\u003e273.88\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd colspan=\"2\" class=\"text-right\"\u003e\u003ca href=\"https:\/\/digitalfire.com\/glossary\/formula+weight\"\u003eFormula Weight\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e273.88\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Rocky Mountain Clay Store","offers":[{"title":"Default Title","offer_id":52085089141019,"sku":"FF3239","price":10.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/9268\/6363\/products\/Ferro-Frit_64e36710-8977-4735-a6e4-0f0ba9779656.jpg?v=1708235624","url":"https:\/\/rockymountainclay.com\/products\/ferro-frit-3249","provider":"Rocky Mountain Clay Store","version":"1.0","type":"link"}