Sapphire Substrate

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Sapphire Substrate

  • Custom sizes and standard sizes in stock
  • Quick Lead Time
  • Competitive Price

  • Sapphire Substrate is a high-quality single-crystal aluminum oxide (Al2O3) wafer that offers excellent hardness, thermal stability, and chemical resistance. It is widely used as a foundation for LED devices, semiconductor wafers, and high-performance electronic components, providing a stable and reliable platform for thin-film deposition and microfabrication. Its optical transparency also makes it suitable for optical applications and precision instrumentation. We can supply high-quality Sapphire Substrate with various specifications and competitive prices, offering customized solutions to meet specific requirements.
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Or email us at sales@heegermaterials.com.

Sapphire Substrate Data Sheet

Density

3.97–4.1 g/cm3

Materials

AI2O3

Melting Point

2045 ℃

Diameter

2-inch, 4-inch, and 6-inch standard diameters, or customized

Thick

100μm, 280μm, 300μm, 350μm, 430μm, 500μm, 650μm, 1mm or customized

Sapphire Substrate Description

Sapphire Substrate is made from premium single-crystal Al2O3, delivering superior mechanical strength, thermal endurance, and chemical inertness. It is commonly used in LED manufacturing, power electronics, and microelectronics, providing a smooth and stable surface for epitaxial growth and device fabrication. Its durability and optical clarity also support applications in optics and high-precision instruments.

  • Sapphire Substrate

Sapphire Substrate Specifications

Item

Specification

Dimensions

6 inch (150/159 mm) / 4 inch (100/104 mm) (Diameter tolerance ±0.05 mm)

Thickness

1 mm / 0.7 mm (Thickness tolerance ±0.002 mm)

Parallelism

10″

Thickness Uniformity

<2 μm @ 25 pcs

Surface Quality

80/50

Surface Flatness

PV: RMS ≤1/4λ @ 632.8 nm

Coating

None

Packaging

Tray or clean cassette packaging

Sapphire Infrared Transmittance at Different Thicknesses

Sapphire Infrared Transmittance at Different Thicknesses

Standard Grade Vs. Custom Grade UV Band Transmittance 

Standard Grade Vs. Custom Grade UV Band Transmittance

Sapphire Substrate Key Features

  • High Hardness: Offers excellent scratch and wear resistance for long-lasting performance.
  • Thermal Stability: Maintains structural integrity under high-temperature processing.
  • Chemical Resistance: Resistant to acids, alkalis, and corrosive chemicals.
  • Optical Transparency: Suitable for optical and photonic applications.
  • Precision Surface: Smooth, defect-free surface ideal for epitaxial growth and device fabrication.

Sapphire Substrate Applications

  • LED Manufacturing: Serves as the base for high-brightness LED devices.
  • Semiconductor Devices: Provides a stable platform for microelectronic components and wafer fabrication.
  • Optical Devices: Used in lenses, windows, and laser systems due to their transparency and durability.
  • High-Temperature Electronics: Ideal for devices operating under extreme thermal conditions.
  • Precision Instruments: Supports sensors, measurement tools, and scientific equipment requiring a smooth, stable substrate.
  • Electronic Devices 1
    Electronic Devices
  • Industrial Machinery 1
    Industrial Machinery
  • LED Substrates 1
    LED Substrates
  • Optical Components 1
    Optical Components
  • High Temperature Processing Equipment 1
    High-Temperature Processing Equipment

Sapphire Material Properties

Property

Specification

Chemical Formula

Aluminum Oxide (Al₂O₃), single crystal

Crystal System

Trigonal, hexagonal lattice

Melting Point

2045℃

Property

Specification

Density

3.97–4.1 g/cm³

Specific Heat

0.18 Cal/g·K (25℃); 750 J·kg⁻¹·K⁻¹ (25°C)

Thermal Conductivity

35–40 W·m⁻¹·K⁻¹ @20°C

Thermal Expansion Coefficient

Parallel: 6.7 × 10⁻⁶/K; Perpendicular: 5.0 × 10⁻⁶/K

Poisson’s Ratio

0.28

Apparent Porosity

0%

Water Absorption

0%

Property

Specification

Hardness

Mohs: 9

Hardness (Knoop)

2000 kgf/mm²

Hardness (Vickers)

1700–1800 kgf/mm²

Elastic Modulus

340–380 GPa

Compressive Strngth

2.1 GPa

Tensile Strength

0.19 GPa

Flexural Strength

448 MPa

Property

Specification

Melting Point

2045℃

Continuous Use Temperature

1800–1950℃

Thermal Expansion Coefficient

Parallel: 6.7 ×10⁻⁶/K; Perpendicular: 5.0 ×10⁻⁶/K;

Thermal Conductivity

35–40 W·m⁻¹·K⁻¹

Specific Heat

0.18 Cal/g·K / 750 J·kg⁻¹·K⁻¹

Property

Specification

Resistivity

>10¹⁶ Ω·cm (25℃)

Dielectric Constant

7.5–10

Dielectric Strength

15–50 kV/mm

Property

Specification

Refractive Index

Parallel: 1.769; Perpendicular: 1.76; Range: 1.71–1.79

Transmission Range

86% (280–3500 nm); Useful range: 200–5500 nm

Sapphire Products Packaging

Sapphire Products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.

ceramic products packing HM

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We will check and get back to you in 24 hours

To customize your sapphire components, please provide the following details:

  1. Dimensions: Specify the diameter, length, width, height, and other parameters.
  2. Shapes: Specify the details about the part’s shape.
  3. Purity of the material
  4. Tolerances: Specify the tolerances you can apcept.
  5. Surface Finish: polished, rough, etc.
  6. Quantity of the products you need
  7. Alternatively, you can provide a drawing with your specifications.

Once we have these details, we can provide you with a quote within 24 hours

We carry a wide variety of alumina products in stock, and for these, there is generally no minimum order requirement. However, for custom orders, we typically set a minimum order value of $200. The lead time for stock items is usually 1-2 weeks, while custom orders usually take 3-4 weeks, depending on the specifics of the order.

Yes. Substrates can be polished to optical-grade smoothness or patterned with microstructures for epitaxial growth, LED fabrication, or other specialized uses.

Yes. Customers can choose from C-plane, A-plane, R-plane, M-plane, or other orientations depending on their application requirements.

Advanced Ceramic Hub, established in 2016 in Colorado, USA, is a specialized supplier and manufacturer of graphene products. With extensive expertise in supply and export, we offer competitive pricing and customized solutions tailored to specific requirements, ensuring outstanding quality and customer satisfaction. As a professional provider of ceramics, refractory metals, specialty alloys, spherical powders, and various advanced materials, we serve the research, development, and large-scale industrial production needs of the scientific and industrial sectors.

Sapphire Substrate

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