Sapphire Substrate

Sapphire Substrate

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

Density3.97–4.1 g/cm3
MaterialsAI2O3
Melting Point2045 ℃
Diameter2-inch, 4-inch, and 6-inch standard diameters, or customized
Thick100μm, 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

ItemSpecification
Dimensions6 inch (150/159 mm) / 4 inch (100/104 mm) (Diameter tolerance ±0.05 mm)
Thickness1 mm / 0.7 mm (Thickness tolerance ±0.002 mm)
Parallelism10″
Thickness Uniformity<2 μm @ 25 pcs
Surface Quality80/50
Surface FlatnessPV: RMS ≤1/4λ @ 632.8 nm
CoatingNone
PackagingTray 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
    Electronic Devices
  • Industrial Machinery
    Industrial Machinery
  • LED Substrates
    LED Substrates
  • Optical Components
    Optical Components
  • High-Temperature Processing Equipment
    High-Temperature Processing Equipment

    • Sapphire Material Properties

    PropertySpecification
    Chemical FormulaAluminum Oxide (Al₂O₃), single crystal
    Crystal SystemTrigonal, hexagonal lattice
    Melting Point2045℃

    PropertySpecification
    Density3.97–4.1 g/cm³
    Specific Heat0.18 Cal/g·K (25℃); 750 J·kg⁻¹·K⁻¹ (25°C)
    Thermal Conductivity35–40 W·m⁻¹·K⁻¹ @20°C
    Thermal Expansion CoefficientParallel: 6.7 × 10⁻⁶/K; Perpendicular: 5.0 × 10⁻⁶/K
    Poisson’s Ratio0.28
    Apparent Porosity0%
    Water Absorption0%

    PropertySpecification
    HardnessMohs: 9
    Hardness (Knoop)2000 kgf/mm²
    Hardness (Vickers)1700–1800 kgf/mm²
    Elastic Modulus340–380 GPa
    Compressive Strength2.1 GPa
    Tensile Strength0.19 GPa
    Flexural Strength448 MPa

    PropertySpecification
    Melting Point2045℃
    Continuous Use Temperature1800–1950℃
    Thermal Expansion CoefficientParallel: 6.7 ×10⁻⁶/K; Perpendicular: 5.0 ×10⁻⁶/K;
    Thermal Conductivity35–40 W·m⁻¹·K⁻¹
    Specific Heat0.18 Cal/g·K / 750 J·kg⁻¹·K⁻¹

    PropertySpecification
    Resistivity>10¹⁶ Ω·cm (25℃)
    Dielectric Constant7.5–10
    Dielectric Strength15–50 kV/mm

    PropertySpecification
    Refractive IndexParallel: 1.769; Perpendicular: 1.76; Range: 1.71–1.79
    Transmission Range86% (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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    Get A Quote

    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 Sapphire 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 Sapphire 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.

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