Orton Self Supporting Ready To Fire Set Cone 04

Cone 04 temperatures are based on a kiln firing at 15°c, 60°c and 150°c degrees per hour when climbing at the last 100 degrees to the top (target) temperature.

• 15°C - 1046°C
• 60°C - 1063°C
• 150°C - 1077°C

These can be used in oxidisation (electric kilns) and in reduction with other fuelled kilns*.

See further advice in our knowledge base on 'Orton cones'.

*except between values of '010' to '3' as they contain iron oxide. Use iron-free ones for firings between this range.

Orton cones SDS

2025 Orton Cones chart