Single Crystal Alumina Sapphire Sheet High Purity Precision Polished Custom Size

Product Name: High Hardness and High Temperature Resistant Single Crystal Alumina Sapphire Sheet
Dimension: Standard or special irregular sizes customized according to requirements

Precision polished from high purity single-crystal alumina (α-Al₂O₃). It features Mohs hardness 9, melting point up to 2040℃, wide-spectrum high transmittance, strong acid and alkali resistance, excellent insulation and thermal conductivity, and superior chemical inertness. Widely applied in semiconductor optoelectronics, optical testing, laboratory high-temperature experiments, medical treatment, aerospace and precision sensors:

Laboratory Chemistry and Precision Testing

Semiconductor, LED and Microelectronics (Core Application)

Optoelectronics, Precision Optics and Sensors

Medical, Aerospace and Special Working Conditions

1. Ultra-high hardness and wear resistance: Mohs hardness 9, second only to diamond, resistant to long-term friction and dust erosion with greatly extended service life for protective components.

2. Ultra-wide high temperature resistance: Melting point 2040℃, stable continuous operation at 1500℃, better thermal conductivity than quartz for superior heat dissipation and outstanding thermal shock resistance.

3. Extreme chemical inertness: Resist all strong acids, strong alkalis and hydrofluoric acid as well as plasma erosion; zero metal ion precipitation without contamination risk for high-purity manufacturing.

4. Full-spectrum high transmittance: Continuous high light transmittance from 0.15μm deep UV to 5.5μm mid-infrared, covering all UV, visible and infrared optical testing scenarios.

5. High insulation and thermal conductivity: Excellent electrical insulation for high-voltage, RF and plasma chambers; better heat conduction than quartz to stabilize heat dissipation of high-power devices.

6. Long-term dimensional stability: Nearly zero deformation under high temperature, uniform crystal structure and high polished flatness, ideal for high-precision epitaxy and optical calibration.