Cone Temperatures Firing Ceramics

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.

Cone temperatures firing ceramics.

High fire porcelain or stoneware cone 02 to 1 degrees cone f c cone 10 2381 1305 10 9 2336 1280 9. From cone 022 approx. People want to know if they can fire a certain clay to a certain cone. Kiln firing chart temperature c f 1400 2552 1300 2372 1200 2192 1100 2012 1000 1832 900 0111652 800 1472 700 0191292 600 1112 500 932 400 752 300 572 200 392 100 212 cone approx 14 13 12 11 10 9 8 7 6 5 4 3 2 01 02 03.

First it is important to know that the maximum cone rating of a stoneware or porcelain clay is the temperature at which it vitrifies. Stoneware glaze some decals fire to cone 10. We get many questions about clay firing temperatures. Pyrometric cones are pyrometric devices that are used to gauge heatwork during the firing of ceramic materials.

Cone temperature conversion chart. 1112 f 605 c to cone 013 approx. However anywhere from 2305 to 2336 1263 to 1326 may be appropriate depending on the specific clay used and desired effect. 4 to 12 used in firing porcelain floor tile china stoneware structural clay products and some refractory materials.

This is the hardening tightening and finally the partial glassification of the clay. How many degrees is cone 04 or cone 10. Yellow yellow orange orange red orange cherry red dull red dark red dull red glow black firing converts ceramic work. Thus pyrometric cones give a temperature equivalent.

Ware and glaze types. Ware must be fired at least once at a higher temperature first in order for the clay body to mature. Between the range of cone 8 and cone 12 high fire stoneware will mature. The temperature equivalent range is approximately 1600 2150f 890 to 1170c.

Fired at cone 4 to 6 then have a low fire glaze firing at cone 06 to 04. What does cone 6 kiln fire to. Temperature equivalent chart for orton cones cone 022 14 pyrometric cones have been used to monitor ceramic firings for more than 100 years. These cones are used in the firing of craft and art bodies for wall tile glazes and some structural clay products.

Cone 10 is the average for this clay body. The average firing temperature for high fire stoneware is 2381 1305. Raku clay is usually bisque fired to cone 04 to 1 clays that are to have crystalline glazes should be bisque fired slightly higher than normal i e.