Cone 013 temperature
Orton cone 013 bends at 1539 °F (837 °C) at 108 °F/hr and 1582 °F (861 °C) at 270 °F/hr. It sits in the low fire range — cone 10 of 38 on the chart, counting up from 022.
108 °F/hr · 60 °C/hr
1539 °F837 °C
Medium — the rate most charts quote
270 °F/hr · 150 °C/hr
1582 °F861 °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 1539 °F is not the same as firing to cone 013 — put a witness cone on the shelf.
Cone 013 is not cone 13
The leading zero means cone 013 counts down from cone 1 — it's a low fire temperature (1539 °F). Cone 13 is 889 °F hotter (2428 °F), in the above studio range range.
What cone 013 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 013 compared
| Comparison | At 108 °F/hr | Difference (medium) | Difference (fast) | |
|---|---|---|---|---|
| cone 013 vs cone 13 | 1539 → 2428 °F | 889 °F (494 °C) | 876 °F (487 °C) | cone 13 is hotter |
| cone 013 vs cone 014 | 1485 → 1539 °F | 54 °F (30 °C) | 42 °F (23 °C) | cone 013 is hotter |
| cone 013 vs cone 012 | 1539 → 1582 °F | 43 °F (24 °C) | 38 °F (21 °C) | cone 012 is hotter |
| cone 013 vs cone 06 | 1539 → 1828 °F | 289 °F (161 °C) | 273 °F (152 °C) | cone 06 is hotter |
| cone 013 vs cone 04 | 1539 → 1945 °F | 406 °F (226 °C) | 389 °F (216 °C) | cone 04 is hotter |
| cone 013 vs cone 5 | 1539 → 2167 °F | 628 °F (349 °C) | 623 °F (346 °C) | cone 5 is hotter |
| cone 013 vs cone 6 | 1539 → 2232 °F | 693 °F (385 °C) | 687 °F (382 °C) | cone 6 is hotter |
| cone 013 vs cone 10 | 1539 → 2345 °F | 806 °F (448 °C) | 799 °F (444 °C) | cone 10 is hotter |
Convert
cone 013 bends at
1539 °F(837 °C)
At 108 °F/hr (60 °C/hr) — medium. Faster firing → the same cone bends hotter. Everything about cone 013 →
Questions
- What temperature is cone 013?
- Orton cone 013 bends at about 1539 °F (837 °C) when the kiln climbs at 108 °F per hour, and about 1582 °F (861 °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 013 in Celsius?
- 837 °C at 108 °F/hr (60 °C/hr) and 861 °C at 270 °F/hr (150 °C/hr), converted from Orton's Fahrenheit chart for self-supporting regular cones.
- Is cone 013 the same as cone 13?
- No — and this is the most common cone mix-up. Cones with a leading zero count down toward cone 1, so cone 013 is cooler than cone 13: about 1539 °F versus 2428 °F at 108 °F/hr, a difference of 889 °F. Read the zero as "oh", not as nothing.
- What is cone 013 used for?
- cone 013 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 013 from cone 014 and cone 012?
- At 108 °F/hr, cone 014 bends 54 °F cooler (1485 °F) and cone 012 bends 43 °F hotter (1582 °F). One cone step is not a fixed number of degrees — the spacing varies across the chart.
Firing to cone 013? Claybench schedules the kiln around it.
Clay body, glazes, and firing schedule are matched by cone before a plan is saved.