Ceran HIGHTRANS
Grade
Choose when full-colour LED/TFT displays or light strips must shine through the cooktop surface.
Values for the HIGHTRANS condition
Other Ceran tempers and conditions
Ceran is listed in 2 conditions; see the grade overview at Ceran.
- TRANS
- HIGHTRANS
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Transparent heater/fireplace window grade | Use for stove, fireplace and oven viewing windows where clear sight of the flame plus 700 °C service is required. | — | 28 | 0.05 | 630 HV | 2 W/m·K |
HIGHTRANSThis page Light-transmitting panel (Ceran Hightrans / Hightrans eco) | Choose when full-colour LED/TFT displays or light strips must shine through the cooktop surface. | — | 30 | 0.05 | 640 HV | 2 W/m·K |
What is Ceran HIGHTRANS?
Ceran HIGHTRANS is Ceran in the HIGHTRANS grade — choose when full-colour LED/TFT displays or light strips must shine through the cooktop surface. Ceran HIGHTRANS has a tensile strength of 30 MPa (4.35 ksi), weaker than 80% of glass grades. The elastic modulus is 92 GPa (13.3 Msi). Ceran HIGHTRANS has a density of 2.55 g/cm³ (0.0921 lb/in³), lighter than 64% of glass grades.
Advantages
- Good corrosion resistance — 92/100, better than 81% of glass grades
- Low embodied carbon — 2 kg CO₂/kg, better than 81% of glass grades
- Tough — resists crack growth — 0.9 MPa·√m (0.819 ksi·√in), better than 79% of glass grades
- Stiff — 92 GPa (13.3 Msi), better than 78% of glass grades
- High service temperature — 700°C (1,292 °F), better than 76% of glass grades
Ceran HIGHTRANS properties
Typical room-temperature values for Ceran HIGHTRANS; 14 are specific to this condition. Other listed values are Ceran reference data and may not represent this condition. Bars are the position among glass grades.
Physical4
Ceran HIGHTRANS has a density of 2.55 g/cm³ (0.0921 lb/in³), lighter than 64% of glass grades.
Mechanical11
Ceran HIGHTRANS has a tensile strength of 30 MPa (4.35 ksi), weaker than 80% of glass grades. The elastic modulus is 92 GPa (13.3 Msi).
Thermal5
Ceran HIGHTRANS is rated for continuous service to 700°C (1,292 °F). It conducts heat at 1.6 W/m·K (0.924 BTU/hr·ft·°F), better than 62% of glass grades. Thermal expansion is 0.1 µm/m·K (0.0556 µin/in·°F).
Electrical5
Ceran HIGHTRANS is an electrical insulator with a dielectric strength of 25 kV/mm (635 V/mil) and a resistivity of 1×10¹¹ Ω·m.
Chemical & Environmental2
Corrosion resistance is excellent (92/100), better than 81% of glass grades.
Sustainability4
Producing a kilogram of Ceran HIGHTRANS takes about 30 MJ of energy and emits 2 kg of CO₂ — less than 79% of glass grades. Typical recycled content is 10%.
Manufacturability3
Ceran HIGHTRANS's machinability is not recommended (12/100, worse than 68% of glass grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ceran HIGHTRANS
Is Ceran easy to machine?
Diamond grinding, core drilling and waterjet only — never conventional cutting; edges must be ground and seamed to remove flaws that dominate strength.
Can Ceran be welded?
Cannot be welded; joined by silicone/RTV gaskets, mechanical frames or glass-solder sealing to matched near-zero-CTE parts.
Can Ceran be formed, bent or molded?
Shaped in the glassy state by rolling/pressing (flat, beaded or downward-flanged panels) and then ceramized on a roller hearth; no reshaping after crystallization.
What surface finishes work on Ceran?
Fire-polished as-rolled surface, decorated by high-temperature ceramic screen-printing inks, optional hard scratch-resistant or anti-fingerprint coatings; no plating or anodizing.
Ceran chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| SiO2glass former | 63 – 70 | 68 |
| Al2O3β-quartz solid solution former | 17 – 21 | 19.5 |
| Li2Okey to near-zero CTE crystal phase | 2.5 – 4.5 | 3.5 |
| MgO | 0.5 – 2 | 1 |
| ZnO | 1 – 2.5 | 1.6 |
| TiO2nucleating agent | 1.5 – 3 | 2.3 |
| ZrO2nucleating agent | 1 – 2.5 | 1.8 |
| BaO | 0 – 2.5 | 1 |
| Na2O+K2Oresidual glass phase | 0.2 – 1.5 | 0.8 |
| colorant (V2O5 / Fe2O3)black variants only; modern grades are As/Sb-free | 0 – 0.3 | 0.05 |
Ceran HIGHTRANS — frequently asked
What is Ceran HIGHTRANS used for?
Ceran HIGHTRANS is typically used for cooktop panels, wood stove viewing windows and fireplace inserts. In short: cooktop-grade glass-ceramic; thermal shock resistant panel; black or transparent versions.
What is the tensile strength of Ceran HIGHTRANS?
Ceran HIGHTRANS has a typical tensile strength of 30 MPa (4.35 ksi) — weaker than 80% of glass grades. Strength varies by condition: see the 2 listed tempers.
Is Ceran HIGHTRANS easy to machine?
Not especially — machinability is rated not recommended (12/100, worse than 68% of glass grades). Diamond grinding, core drilling and waterjet only — never conventional cutting; edges must be ground and seamed to remove flaws that dominate strength.
Can Ceran HIGHTRANS be welded?
Cannot be welded; joined by silicone/RTV gaskets, mechanical frames or glass-solder sealing to matched near-zero-CTE parts.
What surface finishes work on Ceran HIGHTRANS?
Fire-polished as-rolled surface, decorated by high-temperature ceramic screen-printing inks, optional hard scratch-resistant or anti-fingerprint coatings; no plating or anodizing.
Can Ceran HIGHTRANS be formed, bent or molded?
Shaped in the glassy state by rolling/pressing (flat, beaded or downward-flanged panels) and then ceramized on a roller hearth; no reshaping after crystallization.
What is the maximum service temperature of Ceran HIGHTRANS?
Ceran HIGHTRANS is rated for continuous use to about 700°C (1,292 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- SCHOTT CERAN glass-ceramic cooktop panels — technical data — SCHOTT AG (2023)
- SCHOTT ROBAX transparent glass-ceramic — properties brochure — SCHOTT AG (2022)
- ZERODUR / LAS glass-ceramic mechanical and thermal data — SCHOTT AG (2021)
- Engineered Materials Handbook Vol.4: Ceramics and Glasses (glass-ceramics chapter) — ASM International (1991)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.