Ceran
Ceran is a lithium-aluminosilicate glass-ceramic panel, rolled in the glassy state and then ceramized, available in black and transparent versions (Black, HIGHTRANS, TRANS, MIRADUR).
Reference datasheet — Ceran is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Ceran tempers and conditions
Ceran is supplied in 2 conditions, soft to hard.
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 | |
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 |
Supply forms, finishes and certifications
Ways Ceran is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
BlackDefault | Black cooktop panel | Surface finish |
MIRADUR | Scratch-resistant coated panel | Surface finish |
What is Ceran?
Ceran is a lithium-aluminosilicate glass-ceramic panel, rolled in the glassy state and then ceramized, available in black and transparent versions (Black, HIGHTRANS, TRANS, MIRADUR). It is specified where a flat panel must survive thermal shock and continuous service to 700 °C with very low expansion, as in cooktops and stove or fireplace windows. Thermal conductivity is 1.6 W/m·K, so the panel insulates rather than spreads heat. Parts are made to size by diamond grinding and waterjet (machinability rating 12), and strength depends on edge quality since no reshaping is possible after crystallization. Ceran has a density of 2.55 g/cm³ (0.0921 lb/in³), lighter than 64% of glass grades. Ceran 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).
What is Ceran used for?
- Cooktop panels
- Wood stove viewing windows
- Fireplace inserts
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 properties
Typical room-temperature values; bars are the position among glass grades.
Physical4
Ceran has a density of 2.55 g/cm³ (0.0921 lb/in³), lighter than 64% of glass grades.
Mechanical11
Ceran 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 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 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 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's machinability is not recommended (12/100, worse than 68% of glass grades).
Common Calculations4
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the glass family
Yield strength against density for every glass grade FabDigit runs. Ceran is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ceran
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.
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 |
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.
How much does Ceran cost?
Ceran is a high-cost glass ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Ceran — frequently asked
What is Ceran used for?
Ceran is typically used for cooktop panels, wood stove viewing windows and fireplace inserts. In short: cooktop-grade glass-ceramic; thermal shock resistant panel; black or transparent versions.
What is the tensile strength of Ceran?
Ceran has a typical tensile strength of 30 MPa (4.35 ksi) — weaker than 80% of glass grades. Strength varies by condition: see the 2 listed tempers.
Is Ceran easy to machine?
Not especially — machinability is rated not recommended (12/100, worse than 68% of glass grades). Diamond grinding, core drilling and waterjet only — never conventional cutting; edges must be ground and seamed to remove flaws that dominate strength.
Can Ceran be welded?
Cannot be welded; joined by silicone/RTV gaskets, mechanical frames or glass-solder sealing to matched near-zero-CTE parts.
What surface finishes work on Ceran?
Fire-polished as-rolled surface, decorated by high-temperature ceramic screen-printing inks, optional hard scratch-resistant or anti-fingerprint coatings; no plating or anodizing.
Can Ceran be formed, bent or molded?
Shaped in the glassy state by rolling/pressing (flat, beaded or downward-flanged panels) and then ceramized on a roller hearth; no reshaping after crystallization.
What is the maximum service temperature of Ceran?
Ceran is rated for continuous use to about 700°C (1,292 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does Ceran cost?
Ceran is a high-cost glass ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
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; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.