Features of Alumina Sheet
- Alumina ceramic sheets withstand high temperatures up to 1600°C
- Provides excellent electrical insulation performance
- Maintains high hardness and wear resistance
- Resists corrosion in chemical and vacuum environments
- Available in custom sizes with tight tolerances
- Supports thermal conductivity while remaining non-conductive electrically
High-Purity Alumina Sheet Solutions for Industrial Applications
Alumina Sheet offers high hardness, thermal stability, and excellent electrical insulation, making it ideal for electronic substrates, heat sinks, and wear-resistant components. Commonly used in power electronics, laser systems, and high-temperature equipment, it helps reduce failure rates and extend service life.
Advanced Applications of Alumina Sheet in High-Temperature and Electrical Systems
Newthink offers custom Alumina Sheets with precise dimensions and high thermal and dielectric performance, supporting applications in power electronics, semiconductor processing, and high-temperature insulation systems.
High-purity ceramic sheets is ideal for electronic substrates and heat sinks.
Alumina sheets designed for efficient heat dissipation in electronic devices, ensuring performance stability.
Engineered to withstand abrasion in high-friction environments such as machinery linings.
Provides reliable dielectric performance in high-voltage and circuit isolation scenarios.
Used in precision electronics and optical systems requiring purity above 99%.
Supports tight-tolerance cutting for microelectronic and optical component fabrication.
Suitable for large-format equipment requiring stable thermal and mechanical support.
Allows post-processing with high precision while maintaining structural integrity.
Key Industrial Applications of High-Purity Alumina Sheets
Newthink supports your precision processes with Alumina Ceramic Sheets across critical applications.
Power Electronics InsulationAlumina sheets serve as high-temperature electrical insulators in power modules, ensuring stable performance under high voltage and heat.
Semiconductor Wafer ProcessingUsed as substrate holders or shields in semiconductor equipment due to their chemical inertness and dimensional stability at high temperatures.
Laser System Heat SpreadersAlumina sheets dissipate heat efficiently in laser systems, maintaining optical alignment and preventing thermal distortion.
Vacuum Furnace ComponentsAlumina sheets are ideal for use in vacuum furnaces, resisting chemical corrosion and thermal shock in extreme environments.
Wear-Resistant Structural LinersIn machinery and equipment, alumina sheets act as wear-resistant liners, significantly extending service life under abrasive conditions.
Electronic Circuit SubstratesHigh-purity alumina sheets are used as substrates in hybrid microelectronics for their excellent dielectric and thermal conduction properties.
Why Choose Newthink Alumina Sheet?
Choosing Newthink means choosing stable quality, for we deliver exactly what you need.
Precision machining allows us to meet strict thickness and flatness requirements for technical ceramic applications.
Sheets can be fully customized in size, shape, and hole design to match your exact engineering needs.
Quick sampling and short delivery cycles help customers accelerate product development and reduce downtime.
We offer alumina sheets from ultra-thin to large formats, supporting diverse use cases across industries.
Strict quality control ensures every sheet meets high standards for performance and reliability.
We understand thermal cycling, vacuum, and corrosive environments, ensuring product durability under extreme conditions.
Alumina Sheet Production Workshop
Newthink has 14 years of experience in advanced ceramic production. Our factory includes high-temperature kilns, computer inspection, advanced CNC, and laser-cutting machinery for high-accuracy Alumina Sheet production to tight tolerances and high volume. Every sheet is inspected thoroughly and packaged to prevent damage in transit.
Package of Alumina Sheets
Every Alumina Sheet is thoroughly inspected, padded with protective materials, and sealed in moisture-proof packaging to ensure safe global delivery. Fragile or precision parts can be provided with special packaging solutions to prevent chipping, cracking, or contamination during shipping.
Alumina Sheet Specifications
- Properties
| Category | Parameter | Details |
Structure & Shape | Form | Flat sheets, plates, discs, and substrates |
| Size Range | Typical: 10x10mm to 300x400mm; thickness: 0.25mm to 20mm | |
| Surface Finish | Polished or unpolished, laser-cut edges | |
Physical Properties | Purity | 95% to 99.8% |
| Density | 3.7 to 3.9 g/cm³ | |
| Flexural Strength | 300–400 MPa | |
| Hardness | HV 1500–1800 | |
| Thermal Conductivity | 20–35 W/m·K | |
| Dielectric Strength | ≥10 kV/mm | |
Chemical Properties | Al2O3 Content | Typically ≥99% Al2O3 |
| Chemical Stability | Excellent resistance to acids and alkalis (except HF) | |
| Water Absorption | Near zero | |
Applications | Power Electronics | Used as electrical insulators and thermal barriers in IGBT and power modules |
| Semiconductor Processing | Supports wafer handling and protection under high temperature and vacuum | |
| Laser Equipment | Provides thermal control in precision laser systems | |
| Vacuum Furnace | Performs well in high-vacuum, high-heat environments | |
| Wear Liners | Acts as protective liners in mechanical systems subject to wear | |
| Circuit Substrates | Used in hybrid microelectronics for thermal and dielectric properties |
Related Products
Alumina SubstrateUsed in electronic circuits for its excellent dielectric strength and thermal conductivity in thin-layer applications.
Aluminum Oxide DiscRound components offering high hardness and corrosion resistance for analytical instruments and rotating systems.
Alumina PlateFlat ceramic parts designed for high mechanical strength and consistent performance under thermal cycling.
Alumina SpacerMaintains precise spacing and insulation between electronic or mechanical components.
Alumina Sheets are typically available in 95%, 96%, 99%, and 99.5% purities, depending on the required thermal, mechanical, and electrical performance.
Yes, Alumina Sheets offer excellent dielectric strength and are widely used as electrical insulators in power electronics and high-voltage systems.
Standard thickness ranges from 0.25 mm to 20 mm, with sizes customizable from 10×10 mm up to 300×400 mm or larger depending on application needs.
Yes. High-purity Alumina Sheets have withstanding continuous temperature capabilities of up to 1600°C and thus suit furnace, laser system, and heat sink applications.
Yes, they can be laser-cut or CNC-machined to precise dimensions, including holes and slots, without compromising thermal or electrical properties.
