Ceramic Cone Temperatures

Ware and glaze types.

Ceramic cone temperatures.

Cone 022 is the lowest melting cone and requires the least amount of heat to deform or bend. Pyrometric cones are pyrometric devices that are used to gauge heatwork during the firing of ceramic materials. Thus pyrometric cones give a temperature equivalent. Temperature equivalent chart for orton cones cone 022 14 pyrometric cones have been used to monitor ceramic firings for more than 100 years.

Cone temperature conversion chart. Pyrometric cones will be the first to let you know your ceramic firing is under control or that subtle changes. Cone numbers orton makes cones from cone 022 up to cone 42. Cones used on the kiln shelf bend due to the effects of gravity pulling the tip down.

During firing a cone softens and melts as it is heated. As discussed above the equivalent cone temperature depends upon how fast one gets to it. Generally speaking the temperatures in the 108 f hour column are used when discussing ceramics porcelain and china. Stoneware glaze some decals fire to cone 10.

Pyrometric cones measure heatwork the effect of time and temperature. The cones often used in sets of three are positioned in a kiln with the wares to be fired and provide a visual indication of when the wares have reached a required state of maturity a combination of time and temperature.