Thermal properties

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 T_max ≤ 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 T_max ≤ 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 T_max	Usage time
560°C 610°C 660°C 710°C 760°C	5,000 h 1,000 h 100 h 10 h 5 h

Remarks:
The temperature values refer to the hottest points on the outside pane. (T_max). It must be ensured that these temperature/time loading limits are not exceeded.

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