ANTGLASS supplies and processes SCHOTT ZERODUR Glass-Ceramic for optical, electronic, laboratory and industrial components made to customer drawings.
Material Overview
ZERODUR: Near-zero-expansion glass-ceramic. The material system is described as Near-zero-expansion glass-ceramic. Selection begins with the exact grade, wavelength or optical function, thermal and chemical environment, starting form, finished geometry and inspection method. The material record is kept separate from the finished-part drawing so that grade data and manufacturing requirements remain traceable.
Applications associated with this material include Telescope mirrors, metrology, stages, lithography, space optics. ANTGLASS uses the approved material and drawing to manufacture blanks and finished parts rather than treating a published material property as a universal component guarantee.
Published Technical Properties
The values below are taken from the V4R2R2 source-linked material dataset. Conditions such as wavelength, temperature, thickness and orientation remain part of the value and should not be removed during comparison.
| Property | Published reference |
|---|---|
| Material type | Near-zero-expansion glass-ceramic |
| Transmission | Internal transmission 0.95 at 580 nm / 5 mm; 0.90 / 10 mm |
| Refractive index | nd 1.5424 |
| Abbe number | vd 56.1 |
| Density | 2.53 g/cm3 |
| Thermal expansion | Class 1: 0 +/-0.050; Class 0: 0 +/-0.020 x 10^-6/K, 0-50 C |
| Maximum-use reference | 600 C standard |
| Hardness | Knoop 620 |
| Thermal conductivity | 1.46 W/mK at 20 C |
| Chemical resistance | Grade-specific; use manufacturer chemical-resistance data |
| Starting form | Precision blanks and mirror substrates; class and homogeneity by order |
Available Forms and Custom Processing
Common starting and finished forms include Precision blanks and mirror substrates, class and homogeneity by order, Cut blanks, Windows and plates, Discs, rings or wafers, Drawing-based finished components. Actual source size and thickness are matched to the order, while the finished component is controlled by the drawing.
- Drawing and material-grade review
- Blank preparation and geometry planning
- CNC machining, drilling, grinding and stress-aware support
- Lapping, polishing, dimensional inspection and protected packaging
ANTGLASS can manufacture related products including Glass Substrates, Custom-Shaped Precision Glass Parts, Glass Discs, Rings & Spacers. Projects that need material selection, prototype validation, optical performance or harsh-environment review can also use the related solutions: Glass Material Selection & Substitution, Custom Precision Glass Fabrication.
Design Rules for a Manufacturable RFQ
- Specify the required CTE class, homogeneity and dimensional-stability temperature range.
- Dimension critical surfaces, edges, holes, slots and datums separately on the drawing.
- Identify optical, sealing, bonding, coated and cosmetic zones before quotation.
- Match inspection methods to the functional tolerance and surface requirement.
- State prototype and production quantities together with cleaning and packaging needs.
Quality Risks and Inspection
CTE class, homogeneity, residual stress, geometry and support conditions affect dimensional performance. Large or high-value blanks require a defined inspection and handling plan.
- Material identity and source documentation
- Dimensions, thickness and feature position
- Flatness, parallelism, TTV or dimensional-stability requirements
- Edge chips, cracks and surface condition
- Cleaning, orientation and protective packaging
Applications and Product Connections
- Telescope mirrors
- metrology
- stages
- lithography
- space optics
Material Comparison and Alternatives
Compare SCHOTT ZERODUR Glass-Ceramic with Fused silica for transmissive low-CTE optics, silicon carbide for stiffness, alumina for high-temperature insulation.. Substitution should preserve the functional wavelength, refractive or spectral behavior, thermal expansion, temperature range, chemical durability, mechanical behavior, starting form and component cost.
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Frequently Asked Questions About SCHOTT ZERODUR Glass-Ceramic
What are the key properties of SCHOTT ZERODUR Glass-Ceramic?
SCHOTT ZERODUR Glass-Ceramic is selected from grade-specific optical, thermal, mechanical and chemical data. Published references include Material type: Near-zero-expansion glass-ceramic; Transmission: Internal transmission 0.95 at 580 nm / 5 mm; 0.90 / 10 mm; Refractive index: nd 1.5424; Abbe number: vd 56.1. The finished component must also meet the drawing, surface and inspection requirements.
Can ANTGLASS supply and process zerodur glass ceramic in custom sizes?
Yes. ANTGLASS supplies and processes SCHOTT ZERODUR Glass-Ceramic as Precision blanks and mirror substrates, class and homogeneity by order, Cut blanks, Windows and plates, Discs, rings or wafers, subject to the selected starting form and drawing. We cut, machine, drill, grind, lap, polish, clean and inspect the material as required for the component.
Which products can be made from SCHOTT ZERODUR Glass-Ceramic?
Typical product connections include Glass Substrates, Custom-Shaped Precision Glass Parts, Glass Discs, Rings & Spacers. The exact product form, dimensions, edge condition, optical zone and packaging are defined by the customer drawing and application.
How is SCHOTT ZERODUR Glass-Ceramic machined and inspected?
The route is selected from material behavior, thickness, geometry and surface requirements. Inspection covers material identity, dimensions, edges and the functional surface; optical or substrate projects can add clear-aperture, flatness, TTV, surface-quality or spectral checks.
What materials should be compared with SCHOTT ZERODUR Glass-Ceramic?
Common comparison directions include Fused silica for transmissive low-CTE optics, silicon carbide for stiffness, alumina for high-temperature insulation.. Compare the exact grades by wavelength, refractive index or transmission, CTE, temperature, chemical resistance, durability, starting form and total component cost.
Request a Material and Drawing Review
Provide the exact grade or target properties, drawing, dimensions, critical surfaces, operating conditions, quantity and inspection requirements. ANTGLASS will review the material, starting form and process route together.
- Exact material grade or target properties
- Drawing, dimensions, thickness and critical tolerances
- Wavelength, temperature, chemical and mechanical environment
- Surface quality, flatness, TTV, coating or sealing requirements
- Prototype and production quantities
- Inspection, cleaning, traceability and packaging requirements