Robax glass is a transparent ceramic that is suitable for use in wood, gas, pellet, and coal burning applications. It can be used in most any High temperature application.
It is an extremely heat-resistant, transparent glass ceramic which can be produced in a wide variety of shapes and sizes to meet your specific needs.
It has all the advantages of a true temperature miracle: thanks to its extremely low thermal expansion, this glass ceramic is not affected by extremely high temperatures or substantial temperature shifts and differences.
It has thus proved a reliable window for room heating devices such as fireplaces and stoves for more than 20 years. Onlookers can enjoy the dancing flames and cozy warmth, are protected from flying sparks, and make optimum use of energy through targeted regulation of ingoing air and flue gas.
The brand name ROBAX® stands for our transparent glass ceramic for the usage in fireplaces and heating stoves.
Robax glass, neoceram, pyroceram, glass ceramic, are all suitable wood stove replacement glass. They are similar products that can withstand 1200-1400 degree temperatures that are needed in wood stoves. They are all just made by different companies.
These glasses are available in 3/16" and 1/8" thickness only. Only genuine Robax ceramic glass is used in High temperature appliances. Robax ceramic glass is suitable for use in wood, pellet and coal burning stoves. It's thermal shock rating of 1380° F makes it ideal for any application where high temperature tolerance is required. Rarely used for fireplace doors. It often is used in industrial high temperature applications.
We currently stock Pyroceram, Neoceramic and Robax glass. There is no visual or performance difference between pyroceram, neoceram, or robax glass, The difference is just trademarks, all 3 are transparent high temperature ceramic glass with a 1380° F thermal shock tolerance with a slight amber tint, slight texture, and available in 5mm (3/16) and 3mm (1/8) thickness
Density ρ approx. 2,6 g/cm3 (bei 25 °C)
Bending Strength σbB approx. 35 MPa
The strength of glass ceramic is material constant. It is dependent on the size and thickness of the panel, the finish condition (edge working, drillings, etc.), usage conditions, (kind and distribution of defects on the surface), and the time related and kind of impact load and the type of panel installation. The norms to be fulfilled regarding the required strength resistance in the application field of fireplaces differ according to the individual region
Coefficient of mean linear thermal expansion α(20, 700°C) (0 ± 0,5) x 10-6 /K
Resistance to thermal gradients (RTG) The RTG value is a measure of how well a material can resist temperature differences on a restricted area, e.g. the temperature difference between the hot area in the center of a panel and the cold edge area (room temperature). No breakage caused by thermal stress occurs at a maximum temperature of Tmax ≤ 700°C
Resistance to thermal shock (RTS) The RTS value is a measure of the panel‘s ability to withstand a sudden thermal shock. No breakage caused by thermal stress occurs at a maximum temperature of Tmax ≤ 700°C
Temperature/Time Loading The temperature/time loading limits determine the permissible temperature for set usage times at which no breakage caused by thermal stress occurs.
Usage temperature Tmax / Usage time 560°C / 5,000 h 610°C / 1,000 h 660°C / 100 h 710°C / 10 h 760°C / 5 h
Remarks: The temperature values refer to the hottest points on the outside pane. (Tmax). It must be ensured that these temperature/time loading limits are not exceeded.
The chemical composition of ROBAX® complies with the requirements for glass ceramic in accordance with EM 1748 T2. ROBAX® is made of ecologically safe raw materials. The glass can be re-used through recycling of the material (see point 8).
Surface modifications occurring during use ROBAX® has a high degree of resistance to surface attack. In individual cases, however, surface modifications may occur under critical conditions, e.g. corrosive combustion gases (formation of acid and high temperatures).
ROBAX glass® offers an excellent transparency both in the visual and in the IR-range of the heat reflection, providing a best possible view onto the fire and a cozy feeling of warmth. Transmission ROBAX®, thickness 4 mm To see the difference in Robax glass vs. Tempered go to our video page.
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