Cone 07 temperature
Orton cone 07 bends at 1789 °F (976 °C) at 108 °F/hr and 1809 °F (987 °C) at 270 °F/hr. It sits in the low fire range — cone 16 of 38 on the chart, counting up from 022.
108 °F/hr · 60 °C/hr
1789 °F976 °C
Medium — the rate most charts quote
270 °F/hr · 150 °C/hr
1809 °F987 °C
Fast — typical of a quick electric firing
Orton self-supporting regular cones; rate measured over the last 200 °F of the firing. Source: Orton °F chart; °C converted. Cones measure heat-work, so a controller set to 1789 °F is not the same as firing to cone 07 — put a witness cone on the shelf.
Cone 07 is not cone 7
The leading zero means cone 07 counts down from cone 1 — it's a low fire temperature (1789 °F). Cone 7 is 473 °F hotter (2262 °F), in the mid fire range.
What cone 07 is used for
Low fire — Below the usual bisque range. Some low-fire glazes, glass, and enamel work land here; cone 010–08 appears as a soft bisque for very porous ware.
Cone 07 compared
| Comparison | At 108 °F/hr | Difference (medium) | Difference (fast) | |
|---|---|---|---|---|
| cone 07 vs cone 7 | 1789 → 2262 °F | 473 °F (263 °C) | 486 °F (270 °C) | cone 7 is hotter |
| cone 07 vs cone 08 | 1728 → 1789 °F | 61 °F (34 °C) | 56 °F (31 °C) | cone 07 is hotter |
| cone 07 vs cone 06 | 1789 → 1828 °F | 39 °F (22 °C) | 46 °F (26 °C) | cone 06 is hotter |
| cone 07 vs cone 04 | 1789 → 1945 °F | 156 °F (87 °C) | 162 °F (90 °C) | cone 04 is hotter |
| cone 07 vs cone 5 | 1789 → 2167 °F | 378 °F (210 °C) | 396 °F (220 °C) | cone 5 is hotter |
| cone 07 vs cone 6 | 1789 → 2232 °F | 443 °F (246 °C) | 460 °F (256 °C) | cone 6 is hotter |
| cone 07 vs cone 10 | 1789 → 2345 °F | 556 °F (309 °C) | 572 °F (318 °C) | cone 10 is hotter |
Convert
cone 07 bends at
1789 °F(976 °C)
At 108 °F/hr (60 °C/hr) — medium. Faster firing → the same cone bends hotter. Everything about cone 07 →
Questions
- What temperature is cone 07?
- Orton cone 07 bends at about 1789 °F (976 °C) when the kiln climbs at 108 °F per hour, and about 1809 °F (987 °C) at 270 °F per hour. Cones measure heat-work — temperature over time — so the faster you fire, the hotter the kiln has to get for the same cone to bend.
- What is cone 07 in Celsius?
- 976 °C at 108 °F/hr (60 °C/hr) and 987 °C at 270 °F/hr (150 °C/hr), converted from Orton's Fahrenheit chart for self-supporting regular cones.
- Is cone 07 the same as cone 7?
- No — and this is the most common cone mix-up. Cones with a leading zero count down toward cone 1, so cone 07 is cooler than cone 7: about 1789 °F versus 2262 °F at 108 °F/hr, a difference of 473 °F. Read the zero as "oh", not as nothing.
- What is cone 07 used for?
- cone 07 sits in the low fire range. Below the usual bisque range. Some low-fire glazes, glass, and enamel work land here; cone 010–08 appears as a soft bisque for very porous ware.
- How far is cone 07 from cone 08 and cone 06?
- At 108 °F/hr, cone 08 bends 61 °F cooler (1728 °F) and cone 06 bends 39 °F hotter (1828 °F). One cone step is not a fixed number of degrees — the spacing varies across the chart.
Firing to cone 07? Claybench schedules the kiln around it.
Clay body, glazes, and firing schedule are matched by cone before a plan is saved.