Home » Materials » Glass Ceramics » SCHOTT NEXTREMA®
Glass Type: Glass Ceramics
Description
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 |
| Optical Properties | |
|---|
| Refractive Index | N/A |
