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    AI Overview
    99.9%
    Al2O3cap A l sub 2 cap O sub 3
    𝐴𝑙2𝑂3
     (alumina) substrates are high-purity, premium-grade ceramic substrates used for advanced electronic, electrical, and thermal management applications. They offer superior dielectric strength, higher mechanical strength, lower outgassing, and better corrosion resistance compared to standard 96% alumina, featuring high thermal stability (up to $\sim$1700°C) and excellent electrical insulation. 
    Key Features and Properties 
    • Purity: 99.9% minimum
      Al2O3cap A l sub 2 cap O sub 3
      𝐴𝑙2𝑂3
       content, offering superior performance for high-temperature applications.
    • Thermal Conductivity: High thermal conductivity compared to lower-grade alumina.
    • Dielectric Strength: Offers exceptional dielectric strength (
      >15
      kV/mm
      ), making it suitable for electrical insulators.
    • Mechanical Properties: High hardness (1,800-2,000 HV) and good tensile strength.
    • Surface Condition: Available in polished forms (e.g., Two sides polished, surface roughness
      <1
      microinch
      ).
    • Chemical Stability: Excellent resistance to corrosion and chemical attacks. 
    Applications 
    • High-Power Electronics: Used as a base material for insulated gate bipolar transistors (IGBT) and high-power LED boards due to heat dissipation capabilities.
    • Semiconductor Equipment: Ideal for vacuum chamber components and high-temperature furnaces because of extremely low outgassing.
    • Thin/Thick Film Substrates: Used in high-precision circuits, microwave circuits, and hybrid integrated circuits (ICs).
    • Sensor Applications: Used in high-temperature sensors and RF/wireless modules. 
    99.9% Alumina Ceramic Substrates from MTI Corporation are often used for high-precision, two-side polished applications. 
    • 99.9%) Alumina Ceramic Substrate 2"x2"x 0.5mm,2sp
      Al2O3 Ceramic Substrate; SUPERSTRATE 999 Purity: 99.9% Grain Size: 3.0 Microns Size: 2.0" +/- .020" x 2.0" +/- .020" x .020" +/- .
      MTI Corporation
    • Alumina Al2O3 Powder / Aluminum Oxide Powder (Al2O3, alpha, 99 ...
      Aluminum Oxide Powder (Alpha) Products Features: α-phase ultrafine Al2O3: phase stability, high hardness, materials with high dime...
      US Research Nanomaterials Inc.
    • Alumina Ceramic: Common Types and Specifications
      Apr 21, 2026 — 99.9% Alumina (99.9%+ Al2O3) * Maximum strength (400+ MPa) * Maximum hardness (1,800-2,000 HV) * Exceptional wear resistance. * Hi...
      Stanford Advanced Materials
    • Aluminum Oxide (Al2O3) Micron Powder, Purity: 99.9%, Size: 50-100 µm - Nanographenex
      Aluminum oxide (Al2O3) micron powder with a particle size range of 50–100 μm has the following properties: * **Purity** 99.9% * **
      Nanographenex
    • Alumina Ceramic(Al2O3)-Features & Machining
      99% Alumina * Extreme Hardness and Wear Resistance: 99 Alumina ceramics can achieve a Mohs hardness of 9 or higher, with a very de...
      Great Ceramic
    • 99.9% Al2O3 Alumina Ceramic Crucible High Quality Temperature ...
      Details. ... Features: 1. High density, high purity. 2. Good wear-resistant, sealing ability. 3. Good tensile strength. 4. Good hi...
      Made-in-China.com
    • 99.9%) Alumina Ceramic Substrate 2"x2"x 0.5mm,2sp
      Al2O3 Ceramic Substrate; SUPERSTRATE 999 Purity: 99.9% Grain Size: 3.0 Microns Size: 2.0" +/- .020" x 2.0" +/- .020" x .020" +/- .
      MTI Corporation
    • Alumina Al2O3 Powder / Aluminum Oxide Powder (Al2O3, alpha, 99 ...
      Aluminum Oxide Powder (Alpha) Products Features: α-phase ultrafine Al2O3: phase stability, high hardness, materials with high dime...
      US Research Nanomaterials Inc.
    • Alumina Ceramic: Common Types and Specifications
      Apr 21, 2026 — 99.9% Alumina (99.9%+ Al2O3) * Maximum strength (400+ MPa) * Maximum hardness (1,800-2,000 HV) * Exceptional wear resistance. * Hi...
      Stanford Advanced Materials
    • Aluminum Oxide (Al2O3) Micron Powder, Purity: 99.9%, Size: 50-100 µm - Nanographenex
      Aluminum oxide (Al2O3) micron powder with a particle size range of 50–100 μm has the following properties: * **Purity** 99.9% * **
      Nanographenex
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    99.9%) Alumina Ceramic Substrate 2"x2"x 0.5mm,2sp


    MTI Corporation
    https://mtixtl.com › ... › Ceramic & Glass Substrate A-Z
    MTI Corporation
    https://mtixtl.com › ... › Ceramic & Glass Substrate A-Z
    Al2O3 Ceramic Substrate; SUPERSTRATE 999 Purity: 99.9% Grain Size: 3.0 Microns Size: 2.0" +/- .020" x 2.0" +/- .020" x .020" +/- .0005" THICK or 2" x 2" x ...

    Aluminum Oxide Substrates Al2O3


    MTI Corporation
    https://mtixtl.com › collections › aluminum-oxide-substr...
    MTI Corporation
    https://mtixtl.com › collections › aluminum-oxide-substr...
    Aluminum Oxide Substrates Al2O3. Important Info About Aluminum Oxide ... High Purity (Purity :99.9%) Alumina Ceramic Substrate 2"x2"x. High Purity ...Read more
    $15 to $349

    99.6% High Purity Alumina Ceramic Substrates for ...


    Fujian Huaqing Electronic Material Technology Co.,Ltd
    https://www.huaqingcn.com › 999-high-purity-alumina-...
    Fujian Huaqing Electronic Material Technology Co.,Ltd
    https://www.huaqingcn.com › 999-high-purity-alumina-...
    Aluminum Oxide(Al2O3) has extremely high hardness, high temperature resistance and insulation, so it is widely used in all kinds of high precision equipment ...Read more

    MSE PRO 1 kg, 75-85 um Alpha Aluminum Oxide (Alumina ...


    MSE Supplies
    https://www.msesupplies.com › products
    MSE Supplies
    https://www.msesupplies.com › products
    99.9% 3N Al 2 O 3 powder Stable phase, high hardness, materials with high dimensional stability, it is widely used in a variety of plastics, rubber, ceramics, ...Read more

    Alumina Ceramic: Common Types and Specifications


    Stanford Advanced Materials
    https://www.samaterials.com › content › alumina-ceramic...
    Stanford Advanced Materials
    https://www.samaterials.com › content › alumina-ceramic...
    4 days ago — 99.9% Alumina (99.9%+ Al2O3). This is the highest purity commercially available grade. The glassy phase is almost eliminated. Characteristics:.Read more
    People also ask
    What is Al2O3 substrate?
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    What is the price of Al2O3 substrate?
    Technical Alumina Al2O3 Powder, Packaging Type: Bottle at ₹ 5999/tonne in New Delhi.

    Technical Alumina Al2O3 Powder, Packaging Type: Bottle - IndiaMART


    IndiaMART
    https://www.indiamart.com › proddetail › alumina-al2o3...
    IndiaMART
    https://www.indiamart.com › proddetail › alumina-al2o3...
    What is Al2O3 used for?
    An error has occurred. Please try again later.
    Can HF etch Al2O3?
    A wet chemical etch of Al2O3 can be done with HF. The etch rate depends on the HF concentration.Apr 3, 2025

    Specific Process Knowledge/Etch/Aluminum Oxide ...


    LabAdviser - DTU
    http://labadviser.nanolab.dtu.dk › Al2O3_Etch_using_HF
    LabAdviser - DTU
    http://labadviser.nanolab.dtu.dk › Al2O3_Etch_using_HF

    Web results

    High-Purity Aluminium Oxide for Ceramic Substrates (99.9 ...


    Made-in-China.com
    https://m.made-in-china.com › ... › Oxide
    Made-in-China.com
    https://m.made-in-china.com › ... › Oxide
    High-Purity Aluminium Oxide for Ceramic Substrates (99.9% Al2O3) ; Key attributes. Model NO.: Alumina. CAS No.: 1344-28-1. Formula: Al2O3. EINECS: 215-691-6.Read more
    4.0 · Review by MIC_BUYER

    Low Sodium Aluminum Oxide Ceramics 99.9% Al2O3 ...


    industrial-ceramicparts.com
    https://www.industrial-ceramicparts.com › sale-1377148...
    industrial-ceramicparts.com
    https://www.industrial-ceramicparts.com › sale-1377148...
    Low Sodium Aluminum Oxide Ceramics 99.9% Al2O3 Alumina Ceramic Substrate. Price：USD10/piece MOQ：1 piece. Get Best Price Chat Now. Product Description.Read more
    $10.00 · In stock

    Alumina | CoorsTek Technical Ceramics


    CoorsTek
    https://www.coorstek.com › materials › alumina
    CoorsTek
    https://www.coorstek.com › materials › alumina
    Aluminas (aluminum oxide, Al2O3) are the most commonly used technical ceramics due to their generally useful properties and good price/performance ratio.Read more

    Aluminum Oxide (Al2O3) Micron Powder, Purity: 99.9%, Size


    Nanographenex
    https://nanographenex.com › aluminum-oxide-al2o3-m...
    Nanographenex
    https://nanographenex.com › aluminum-oxide-al2o3-m...
    This high-purity Aluminum Oxide (Al₂O₃) Micron Powder, with a particle size range of 50–100 µm and 99.9% purity, is a premium-grade alumina ideal for advanced ...Read more
    £25.00 to £500.00 · In stock

    The process of growing Cr2O3 thin films on α-Al2O3 ...


    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    ScienceDirect.com
    https://www.sciencedirect.com › article › abs › pii
    by Y Gao · 2017 · Cited by 29 — Cr2O3 thin films are grown on α-Al2O3 substrates with localized epitaxy at 320 °C. · Individual columnar crystalline grains are grown in c-axis.Read more
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