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Glass Type: Glass Ceramics
SCHOTT NEXTREMA® is a highly versatile glass-ceramic with excellent temperature and thermal shock resistance and near zero thermal expansion– even under demanding conditions and in challenging environments. NEXTREMA® exhibits high mechanical strength– without the need for additional toughening processes. It also offers six transmission profiles in the visible and infrared range.
NEXTREMA® can be used in a broad range of applications due to its differing material thicknesses between 2 mm and 6 mm (>6 mm on request). Some examples of areas where NEXTREMA® has been used successfully include grilling, infrared heaters, high temperature furnaces, and household appliances, among others.
|Thermal Properties||Mechanical Properties|
|Thermal Coefficient of Expansion (-50 °C; 100 °C)||-0.8 – 0.6 x 10-6 K-1||Density||≈2.6 g/cm3|
|Thermal Coefficient of Expansion (0 °C; 100 °C)||-0.8 – 0.6 x 10-6 K-1||Knoop Hardness HK 1.1/20||≈585 Hk|
|Thermal Coefficient of Expansion (20 °C; 300°C)||-0.4 – 0.9 x 10-6 K-1||Young's Modulus||N/A|
|Thermal Coefficient of Expansion (300 °C; 700 °C)||0.1 – 1.6 x 10-6 K-1||Poisson's Ratio||≈0.26 µ|
|Chemical Properties||Electrical Properties|
|Hydrolytic Resistance DIN ISO 719||HGB 1||Dielectric Constant εr at 1 MHz||6.5 -7.8|
|Acid Resistance DIN 12116||S 1-2||Resistivity ρD DC at ϑ = 350°C in Ω·cm||5.2-5.7|
|Alkali Resistance DIN ISO 695||A 1-2||Dielectric Strength||N/A|