seger cone numbers

These triangular pyramids about 3 inches high are used by potters to determine the highest temperature reached during a firing of a kiln. The cones are made in a series with differing compositions, so that they melt at different temperatures.

Segar Cone
Number
Temperature reached
in °F
010 1743°F
09 1778°F
08 1814°F
07 1850°F
06 1886°F
05 1922°F
04 1958°F
03 1994°F
02 2030°F
01 2066°F
1 2102°F
2 2138°F
3 2174°F
4 2210°F
5 2246°F
6 2282°F
7 2318°F
8 2354°F
9 2390°F
10 2426°F
11 2462°F
12 2498°F
13 2534°F
14 2570°F
15 2606°F
16 2642°F
17 2678°F
18 2714°F
19 2750°F
20 2786°F
21 2822°F
22 2858°F
23 2894°F
24 2930°F
25 2966°F
26 3002°F
27 3038°F
28 3074°F
29 3110°F
30 3146°F
31 3182°F
32 3218°F
33 3254°F

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