High-Temperature Cast Acrylic Sheets (W7)
Optical-grade performance engineered for elevated heat environments and applications.
CLAREX HiTemp (W7) Cast Acrylic offers the same exceptional optical clarity and mechanical strength as standard CLAREX formulations, but with enhanced thermal resistance for demanding applications.
Designed to maintain stability up to 95°C continuous working temperature (versus 85°C for standard formulations), CLAREX HiTemp provides greater thermal stability for demanding environments where consistent optical performance is critical. The W7 formulation can also serve as the base material for customized CLAREX products, including diffusers, optical filters, and NIR-transmitting windows.
Benefits of High-Temperature Cast Acrylic Sheets
High Heat Resistance
Maintains clarity and strength at continuous temperatures up to 95°C.
Optical-Grade Quality
Delivers the same precision optical properties as standard CLAREX sheets.
Exceptional Durability
Excellent weatherability and chemical resistance for long-term performance.
Machinability & Versatility
Ideal for laser cutting, fabrication, and custom processing.
Defect-Free Finish
100% visually inspected to ensure optical uniformity and consistency.
Custom Colors
Color-matching is available to meet specific visual or performance requirements.
Common High-Temp Acrylic Sheet Applications
Durable and optically precise, CLAREX HiTemp (W7) sheets perform reliably in environments requiring both thermal stability and visual clarity.
LCD & Display Protective Windows
Clear protective windows for displays and electronic screens exposed to elevated operating temperatures.
Camera & Lens Covers
Optically precise protective covers for cameras, lenses, and imaging systems where heat resistance and visual clarity are important.
Sensor & Light Filters
Precision filter materials for sensors and light-based systems that require consistent optical performance at elevated temperatures.
Optical, Scientific, & Industrial Instrumentation
High-quality windows, covers, and panels for precision equipment requiring visual clarity and reliable performance at elevated temperatures.
High-Temperature Lighting Applications
Covers, windows, and optical components used near light sources or within lighting systems where elevated temperatures may affect standard acrylic.
Base Substrate for High Temperature Coating Processes
The higher temperature resistance means that the sheets are less susceptible to damage from the elevated temperatures experienced during vacuum deposition coating.
Sample materials may be available to help you evaluate material performance.
THICKNESS OPTIONS
- 0.2mm
- 0.25mm
- 0.3mm
- 0.35mm
- 0.4mm
- 0.5mm
- 0.6mm
- 0.7mm
- 0.8mm
- 1.0mm
- 1.2mm
- 1.5mm
- 2.0mm
- 2.5mm
- 3.0mm
- Custom
Size Options
- Standard small sheet: 400mm × 550mm
- Standard large sheet: 1000mm × 1000mm
- Custom sizes: Maximum dimensions depend on application. Contact us to discuss options.
Finished Parts
Sheets can be fabricated and finished to customer specifications.
Color Options
- Available in a wide range of transparent, translucent, and opaque colors, including neutral density (smoke)
- Standard colors available for sheets with a thickness of 0.5 mm and up
- Custom color-matching is available to achieve your desired look or optical characteristics
Coating Options
- Optical-grade hard-coat for scratch and chemical resistance
- Anti-bacterial hard-coat
- Anti-reflective (AR) coatings
- Mirror coatings
- Additional specialty coatings available upon request
Surface Options
- Non-glare or textured surfaces can be molded directly during the casting process—no coating required.
- Multiple texture options with varying gloss levels
- Available on one or both sides in any combination
Customization
Custom sheets & parts to meet the needs of your applications.
Build your own sheets. Do you have a unique design requirement that cannot be met with off-the-shelf UV filter sheet materials? CLAREX acrylic can be fully customized and produced from low-volume runs to mass production. Select thickness, formulation, additives, pigments, textures, surface coatings, and optical coatings to create thin acrylic sheets tailored to your application.
Typical lead time is 4–8 weeks. Finished parts and assemblies can also be fabricated to specification.
PRODUCT Properties
Physical & Chemical Properties of High-Temperature Acrylic Sheets
| PROPERTY | METHOD | UNIT | UNCOATED | with HARD COAT |
|---|---|---|---|---|
| Specific Gravity | ASTM D-792 | 1.19 | 1.19 | |
| OPTICAL | ||||
| Refractive Index | ASTM D-542 | 1.49 | 1.49 (1.54) | |
| MECHANICAL | ||||
| Elongation | ASTM D-638 | % | 5 | 5 |
| Tensile Rupture Strength | ASTM D-638 | kg/cm2 | 750 | 650 |
| Flexural Rupture Strength | ASTM D-790 | kg/cm2 | 1200 | 800 |
| THERMAL | ||||
| Heat Distortion Temperature | °C | 120 | 120 | |
| Maxiumum Recommended continuous temperature | °C | 95 | 95 | |
| DURABILITY | ||||
| Heat Resistance | 80ºC x 100hr | No Change | No Change | |
| Cold Resistance | -40ºC x 100hr | No Change | No Change | |
| Humidity Resistance | 60ºC x 90% x 100hr | No Change | No Change | |
| Thermal Cycle | -40ºC <> 80ºC (10 cycles) | No Change | No Change | |
| ELECTRICAL | ||||
| Surface Resistivity | w | 10^16 | 10^16 | |
| CHEMICAL | ||||
| Methyl Alcohol (50%) | No Change | No Change | ||
| Ethyl Alcohol (50%) | No Change | No Change | ||
| Soap Aqua Solution | No Change | No Change | ||
| Toluene | Dissolved | No Change | ||
| Acetone | Dissolved | No Change | ||
| Benzene | Swollen | No Change | ||
| Ethylene Dichloride | Dissolved | No Change | ||
| OTHER | ||||
| Pencil Hardness | 2H | >6H | ||
| Adhesion | K-5400 | 100/100 | ||
| FLAMMABILITY | ||||
| Fire Resistivity | UL standard | >=0.8mm Thickness | 94HB | 94HB |
Ready to Get Started with High Temperature Acrylic Sheets?
Whether you need standard sizes, custom fabrication, or a specialized formulation, our team can help configure CLAREX to meet your exact requirements.