Temperature Ranges

Low-fire / Earthenware

  • Average is Cone 04 (1950° F / 1100° C)
  • Ranges from Cone 015 – 1 (up to 2109° F / 1154° C)
  • a relatively soft, porous clay body, and a clearly separate glaze layer.
  • Glaze colors are generally more varied and bright than stoneware.

Mid-range

  • Ranges from Cone 2 – 7 (2124–2264° F / 1162–1240° C)
  • a relatively soft, porous clay body, and a clearly separate glaze layer.
  • Glaze colors are generally more varied and brighter than stoneware.
  • A common temperature range for industrial ceramics.

High-fire / Stoneware

  • Average is Cone 10 (2381° F / 1305° C)
  • Cone 8 -12 range (2305-22419° F / 1263-1326° C)
  • a hard, vitrified, non-absorbent clay body
  • a body-glaze layer that forms between the clay body and glaze.

Very High-fire / Porcelain

  • Cone 10 -13 range (2381–2455° F / 1305–1346° C)
  • a hard, vitrified, non-absorbent clay body
  • a body-glaze layer that forms between the clay body and glaze.

Source:
Textbook, Hands In Clay, Speight-Toki, pages 342-343