Typical application
ZA33 M is mainly used in forehearth as glass contact channel blocks. Good corrosion resistance and low porosity associated with good thermal shock resistance.
Its very good corrosion resistance and low porositity ensure a long and consistent lifespan. Its good thermal shock resistance reduces cracking during heat-up.
For applications sensitive to cat scratches and stoning, we recommend BPAL (Zirconia free).
Chemical and physical properties
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Typical chemical composition
Typical crystallographic analysis
Main crystallographic phase:
- corundum
- monoclinic zircon
Secondary phase:
- mullite
- silicate phase
Physical characteristics
| Description | International standards | British standards |
|---|---|---|
| Refractoriness under load (°C) | 1,640°C | 2,984°F |
| Cold crushing strength | 110Mpa | 15,954psi |
| Linear thermal expansion | 7 10-6K-1 | 3.8 10-6°F-1 |
| Thermal conductivity at 1,000°C | 2.4 W.m-1.K-1 |
16.65 BTU in |
| Apparent porosity | 15% | 15% |
| Typical bulk density | 3.05g/cm3 | 190pcf |
Storage
The sintered alumina-zirconia-silica (AZS) with 10% zirconia, ZA33 M solution must be stored in a dry environment protected from weather conditions.