Fire Clay, also known as refractory clay, is valued for its ability to resist high temperatures, the minimum temperature being 1515 C or 2795 F. Because of this, fire clay is often used to make fire brick, a type of ceramic developed for employment in high temperature operations like furnace lining and metal working utensils.
Fire clay is stable enough when firing in kilns, that it is sometimes used in the ceramics industry to create more complex pottery objects such as pipes and sanitary ware.
Additional Notes:
*Fire clay is also mixed with cement and sand to produce mortar.
