{"product_id":"htp-ball-clay-50-pounds-dry-rmhtp50","title":"HTP Ball Clay","description":"\u003cdiv class=\"rm-testing-statement\" style=\"border:2px solid #8a5a00;border-radius:6px;padding:12px 16px;margin:16px 0;background:#fdf6e3;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eYou must test before you use it, at any scale.\u003c\/strong\u003e Raw materials, mined or man-made, are not consistent. Color, strength, particle size and chemistry can change from one bag to the next and from one supplier to another, even when the name on the bag stays the same. Before you use this material in a glaze, slip or clay body of any size, mix a small test batch, fire it on your own clay in your own kiln, and check the results.\u003c\/p\u003e\u003c\/div\u003e\n\u003cspan\u003e\u003c\/span\u003e\n\u003ch2 class=\"abz-seo-product\"\u003eHTP BALL CLAY\u003c\/h2\u003e\n\u003cp\u003eLow lignite Tennessee Ball Clay \u003cbr\u003eOxide Analysis \u003cbr\u003eFormula \u003cbr\u003eCaO 0.30% 0.017 \u003cbr\u003eMgO 0.30% 0.024 \u003cbr\u003eK2O 0.70% 0.024 \u003cbr\u003eNa2O 0.10% 0.005 \u003cbr\u003eTiO2 1.40% 0.056 \u003cbr\u003eAl2O3 32.00% 1.000 \u003cbr\u003eSiO2 53.60% 2.843 \u003cbr\u003eFe2O3 1.10% 0.022 \u003cbr\u003eLOI 10.50\u003c\/p\u003e\n\u003cp\u003eOxide Weight 285.28 Formula Weight 318.75 If this formula is not unified correctly please contact us. This Gleason, Tennessee material has been used in the electrical porcelain and tile industries for many years. It has a finer particle size than many other K\u0026amp;T Ball clays and is thus more plastic and prone to drying cracks. However, its added whiteness and low coal and other particulates make it an attractive material.\u003c\/p\u003e\n\u003cp\u003eWater of Plasticity*: 37.0%\u003cbr\u003e% Dry Shrinkage*: 6.5\u003cbr\u003eDry M.O.R., psi:* 825\u003cbr\u003epH: 4.4\u003cbr\u003eC.E.C., meq\/100g: 11.0\u003cbr\u003eSpecific Surface Area, sq metre\/g: 24.4\u003cbr\u003eSoluble sulfur+: Low\u003c\/p\u003e\n\u003cp\u003eP.C.E.: 32\u003c\/p\u003e\n\u003cp\u003eParticle Size, Microns: 20 10 5 2 1 0.5 0.2\u003cbr\u003e(% finer than) 99% 97% 93% 81% 72% 56% 35%\u003c\/p\u003e\n\u003cp\u003eFired Properties\u003cbr\u003eCone 5 10\u003cbr\u003e----\u003cbr\u003eTotal Shrinkage: 13.0% 14.5%\u003cbr\u003eAbsorption: 10.0% 1.0% \u003cbr\u003e\u003c\/p\u003e","brand":"Sheffield Pottery","offers":[{"title":"5 Pounds","offer_id":67286236987763,"sku":"RMHTP-5","price":6.0,"currency_code":"USD","in_stock":true},{"title":"10 Pounds","offer_id":67286237020531,"sku":"RMHTP","price":11.0,"currency_code":"USD","in_stock":true},{"title":"25 Pounds","offer_id":67286237053299,"sku":"RMHTP-25","price":25.0,"currency_code":"USD","in_stock":true},{"title":"50 Pounds","offer_id":45113726730562,"sku":"RMHTP50","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0677\/5508\/2050\/files\/m_15058.5a6a6a099709c.jpg?v=1696879466","url":"https:\/\/www.sheffield-pottery.live\/products\/htp-ball-clay-50-pounds-dry-rmhtp50","provider":"Sheffield Pottery Inc.","version":"1.0","type":"link"}