ANTGLASS supplies and processes SCHOTT BOROFLOAT 33 Glass for optical, electronic, laboratory and industrial components made to customer drawings.
Material Overview
BOROFLOAT 33: Borosilicate float glass. The material system is described as Borosilicate float glass. 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 Laboratory systems, sight windows, semiconductor packaging, sensors, heaters, industrial equipment.. 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 | Borosilicate float glass |
| Transmission | UV-to-IR curves published; visible transmission typically >90% at suitable thickness |
| Refractive index | 1.47140 |
| Density | 2.23 g/cm3 at 25 C |
| Thermal expansion | 3.25 x 10^-6/K, 20-300 C |
| Transformation / annealing | Tg 525 C; softening point 820 C |
| Softening temperature | Tg 525 C; softening point 820 C |
| Maximum-use reference | 450 C long-term; 500 C short-term (<10 h) |
| Hardness | Knoop 480 HK 0.1/20 |
| Thermal conductivity | 1.2 W/mK at 90 C |
| Chemical resistance | HGB 1 / HGA 1 hydrolytic; acid class 1; alkali A2 |
Available Forms and Custom Processing
Common starting and finished forms include 0.70-25.40 mm standard thicknesses, sheets up to 2300 x 1700 mm depending on thickness, 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
- Precision cutting, CNC machining, drilling and edge finishing
- Lapping or polishing, cleaning, inspection and protective packaging
ANTGLASS can manufacture related products including Precision Optical Glass Windows, Glass Cover Plates, Glass Substrates, Glass Wafers, Glass Discs, Rings & Spacers, Drilled & Slotted Glass Parts. Projects that need material selection, prototype validation, optical performance or harsh-environment review can also use the related solutions: Prototype & Small-Batch Glass Manufacturing, High-Temperature & Chemical-Resistant Glass.
Design Rules for a Manufacturable RFQ
- Define thermal cycling, gasket or sealing contact and the unsupported clear span.
- 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
Control edge damage, sealing contact, thermal gradients and clamp loading. Material data does not replace validation of the complete pressure, thermal or chemical assembly.
- Material identity and source documentation
- Dimensions, thickness and feature position
- Edge chips, cracks and surface condition
- Cleaning, orientation and protective packaging
Applications and Product Connections
- Laboratory systems
- sight windows
- semiconductor packaging
- sensors
- heaters
- industrial equipment.
Material Comparison and Alternatives
Compare SCHOTT BOROFLOAT 33 Glass with Fused silica for lower CTE and higher temperature, soda-lime for lower cost, aluminosilicate for strengthening.. Substitution should preserve the functional wavelength, refractive or spectral behavior, thermal expansion, temperature range, chemical durability, mechanical behavior, starting form and component cost.
Related Products
- Precision Optical Glass Windows
- Glass Cover Plates
- Glass Substrates
- Glass Wafers
- Glass Discs, Rings & Spacers
- Drilled & Slotted Glass Parts
Related Materials
Related Solutions
Frequently Asked Questions About SCHOTT BOROFLOAT 33 Glass
What are the key properties of SCHOTT BOROFLOAT 33 Glass?
SCHOTT BOROFLOAT 33 Glass is selected from grade-specific optical, thermal, mechanical and chemical data. Published references include Material type: Borosilicate float glass; Transmission: UV-to-IR curves published; visible transmission typically >90% at suitable thickness; Refractive index: 1.47140; Density: 2.23 g/cm3 at 25 C. The finished component must also meet the drawing, surface and inspection requirements.
Can ANTGLASS supply and process borofloat glass in custom sizes?
Yes. ANTGLASS supplies and processes SCHOTT BOROFLOAT 33 Glass as 0.70-25.40 mm standard thicknesses, sheets up to 2300 x 1700 mm depending on thickness, 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 BOROFLOAT 33 Glass?
Typical product connections include Precision Optical Glass Windows, Glass Cover Plates, Glass Substrates, Glass Wafers, 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 BOROFLOAT 33 Glass 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 BOROFLOAT 33 Glass?
Common comparison directions include Fused silica for lower CTE and higher temperature, soda-lime for lower cost, aluminosilicate for strengthening.. 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