Temperature Equivalent Chart
(when heated at 150oC/hr*)
Warning! Do not view cones above earthenware temperature with the naked eye as this may cause cataracts. View through welders goggles – sunglasses are not suitable as they filter out UV, but not the infra-red, which is the damaging wavelength in this case!
Cone No. | Centigrade | Fahrenheit | Visual Color |
022 | 600 | 1112 | Dull Red |
021 | 614 | 1137 | |
020 | 635 | 1175 | |
019 | 683 | 1261 | |
018 | 717 | 1322 | |
017 | 747 | 1376 | |
016 | 792 | 1457 | |
015 | 804 | 1479 | |
014 | 838 | 1540 | |
013 | 852 | 1565 | |
012 | 884 | 1623 | Cherry Red |
011 | 894 | 1641 | |
010 | 900 | 1652 | |
09 | 923 | 1693 | |
08 | 955 | 1751 | Orange |
07 | 984 | 1803 | |
06 | 999 | 1830 | |
05 | 1046 | 1914 | |
04 | 1060 | 1940 | |
031/2 | 1080 | 1976 | |
03 | 1101 | 2014 | |
02 | 1120 | 2048 | |
01 | 1137 | 2079 | |
1 | 1154 | 2109 | Yellow |
2 | 1162 | 2124 | |
3 | 1168 | 2134 | |
4 | 1186 | 2167 | |
5 | 1196 | 2185 | |
6 | 1222 | 2232 | |
7 | 1240 | 2264 | |
8 | 1263 | 2305 | |
9 | 1280 | 2336 | |
10 | 1305 | 2381 | White |
11 | 1315 | 2399 | |
12 | 1326 | 2419 | |
13 | 1346 | 2455 |