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Orton Cones

Pyrometric cones measure heat-work (the effect of time and temperature). Pyrometric cones are slender pyramids made from about 100 carefully controlled compositions. Each cone number is unique in measuring temperature within a small temperature range (less than 30°C). Cones measure the amount of heat absorbed. As the cone nears its maturing range, it softens and the tip begins to bend, drawn down by the influence of gravity.
 
Mini Bars
$7.70 for each box of 50 bars
Cone 022
Cone 021
Cone 020
Cone 019
Cone 018
Cone 017
Cone 08
Cone 07
Cone 06
Cone 05
Cone 04
Cone 5
Cone 6
Cone 7
Cone 8
Cone 9
Cone 10
 
Self Supporting Cones
$7.70 for each box of 25 cones
Self Supporting Cone 08 $7.70
Self Supporting Cone 07 $7.70
Self Supporting Cone 06 $7.70
Self Supporting Cone 05 $7.70
Self Supporting Cone 04 $7.70
Self Supporting Cone 03 $7.70
Self Supporting Cone 4 $7.70
Self Supporting Cone 5 $7.70
Self Supporting Cone 6 $7.70
Self Supporting Cone 7 $7.70
Self Supporting Cone 8 $7.70
Self Supporting Cone 9 $7.70
Self Supporting Cone 10 $7.70
Self Supporting Cone 11 $7.70
Self Supporting Cone 12 $7.70
 
Small Cones
$7.70 for each box of 50 cones
Cone 022
Cone 021
Cone 020
Cone 019
Cone 018
Cone 017
Cone 08
Cone 07
Cone 06
Cone 05
Cone 04
Cone 5
Cone 6
Cone 7
Cone 8
Cone 9
Cone 10
 
Large Cones
$10.19 each box of 50 cones
Large Cone 08
Large Cone 07
Large Cone 06
Large Cone 05
Large Cone 04
Large Cone 03
Large Cone 4
Large Cone 5
Large Cone 6
Large Cone 7
Large Cone 8
Large Cone 9
Large Cone 10
Large Cone 11
Large Cone 12
Orton also provides a computer program to relate bending behavior of cones to temperature, heating rate and hold time. Large and Self-Supporting cones are used as witness cones to monitor the firing and verify temperature uniformity.