Porcelain of porcelain, but of porcelain enamel on a metal base, usually of cast iron. Porcelain enamel is a marketing term used in the US, and is not porcelain but vitreous enamel. Porcelain Porcelain () is a ceramic material made by heating materials, generally including kaolin, in a kiln to temperatures between . The toughness, strength, and translucence of porcelain, relative to other types of pottery, arises mainly from vitrification and the formation of the mineral mullite within the body at these high temperatures. Though definitions vary, porcelain can be divided into three main categories: hard-paste, soft-paste and bone china. The
Coalport porcelain Co. in 1814 The same year John Rose moved the Caughley production the short distance to the Coalport site. Rose's rapid success enabled him to buy the Nantgarw porcelain manufactory in 1819 and the Swansea porcelain manufactory, with their repertory of moulds. John Rose died in 1841; the enterprise was continued under the former name "John Rose & Co." by his nephew W.F. Rose and William Pugh. William Pugh continued the production as sole proprietor from 1862 until his death in 1875, after which the company was put in receivership by his heirs. It was purchased in 1880 by the