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Light grey/anthracite colored, fireclay clay from the Wittgert company.
| firing colour: | anthracite - black |
| drying shrinkage: | 6.1% |
| Firing shrinkage (1200°C): | 6.6% |
| Water absorption (1200°C): | 0.9% |
| fireclay: | 0 - 0.5mm |
| grit: | 0 - 1mm |
| sintering temperature: | 1250°C |
| CTE 20-400: | 6.2 |
| CTE 20-500: | 6.5 |
| CTE 20-600: | 7.3 |
| Firing range: | 1000 - 1300ºC |
| shipping weight: | 10.17kg |
| Contents: | 10.00kg |
