ZIRCHROM 30
Sintered 30% chrome-alumina and alumina-zirconia-silica (AZS)
Good corrosion and thermal shock resistance.
Typical application
ZIRCHROM 30 is mainly used for glass contact and superstructure application for insulation glass furnaces.
For crown application, refer to ZIRCHROM HC.
Also a potential material for overcoating applications.
Chemical and physical properties
Typical chemical composition
Typical crystallographic analysis
- Cr2O3 - Al2O3 solid solution
- Corundum
- Monoclinic zirconia
Physical characteristics
| Description | International standards | British standards |
|---|---|---|
| Cold crushing strength | 160MPa | 23,206psi |
| Coefficient of thermal expansion at 1,000°C | 8 10-6°C | 4.4 10-6°F-1 |
| Thermal conductivity at 1,000°C | 1.7 W.m-1.K-1 | 11.8 BTU in hr-1ft-2°F-1 |
| Open porosity | 16% | 16% |
| Typical bulk density | 3.4g/cm3 | 212pcf |
Storage
The sintered 30% chrome-alumina and alumina-zirconia-silica (AZS), ZIRCHROM 30 solution must be stored in a dry environment protected from weather conditions.
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