Robax® is a highly transparent glass-ceramic having virtually zero thermal expansion and sufficient mechanical resistance required for all standard applications. It is produced as flat sheets using a rolling process. As a result of its extremely low thermal expansion, Robax® can be subjected to extreme temperature differences. Even when used in high temperature conditions, Robax® maintains excellent stability of form. Further more, it can be processed mechanically using all of the normal methods in glass processing.
Robax® processes a high degree of resistance against thermal stresses and chemical surface attacks. Its diverse range of application include: fireplace doors and windows, chemical process sight glass, high temperature vision windows, heat insulators, commercial oven/boilers, architectural and outdoor lighting, electronics and UV light wave blocking applications.
Robax® available sheet size and thickness:
1580mm (62.2") x 840mm(33.1") | 3.0mm and or 5mm thickness
| Schott®: Robax® | |||
|---|---|---|---|
| Glass Code: Schott | Robax® |
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| Type | Glass-Ceramic |
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| Color | Clear |
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| Principal Use | Industrial |
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| Thermal Expansion | Multiply by 10-7 K1 |
20 - 700°C |
5.0 |
Multiply by 10-7 or-1 |
38 - 1292°C |
2.8 |
|
| TSR (Thermal Shock Resistance) | 1260°R |
700 K |
|
| RTD (Resistance to Thermal Diffiernece) | 1260°R |
700 K |
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| Density q/cm3 | 2.6 |
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| Young's Modulus (93 GPa) / Msi | 13.5 |
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| Poisson's Ratio | 0.25 |
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| Temperature / Time Load Capacity: spefifies the maximum allowed temperature for the given load times for the practical use as fireplace panels below which no cracking due to thermal stress occurs. The temperature values refer to the hottest point on the exterior side of the panel (TTes.max). | 700°C |
5000hr. |
|
750°C |
1000hr. |
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775°C |
100hr. |
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800°C |
10hr. |
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825°C |
5hr. |
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| Temperature / Time Load Capacity: for homogeneous heating conditions in a testing furnace, the following temperature time load data applies. Not that this table is not applicable for fireplace panels which typically have uneven temperature distributions. The temperatures refer to the homogenous heating of Robax® panels (THom). | 700°C |
6000hr. |
|
750°C |
750hr. |
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775°C |
275hr. |
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800°C |
100hr. |
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825°C |
35hr. |
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