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High-hardness alumina ceramic sheets are advanced, technical ceramic materials designed for demanding industrial applications requiring superior wear, heat, and electrical insulation properties. Typically composed of 96% to 99.7% aluminum oxide (
), these sheets are fired at high temperatures (approx. 1600°C) to achieve high density and a 9 on the Mohs hardness scale.
Key Characteristics
- Extreme Hardness & Wear Resistance: Alumina ceramics offer exceptional abrasion and erosion resistance, with hardness near that of natural corundum.
- High-Temperature Stability: They can withstand operating temperatures up to 1450°C–1700°C.
- Electrical Insulation: They are excellent insulators, commonly used in high-power electronic devices, MOSFET transistors, and semiconductor components.
- Thermal Management: These sheets possess good thermal conductivity, allowing for effective heat dissipation.
- Chemical Inertness: They offer high resistance to corrosion from acids and alkalis.
Typical Applications
- Electronics/Power: Heat sink insulation, insulating plates for transistors, and substrate material for circuitry.
- Industrial Engineering: Lining materials for milling systems, chutes, and conveying equipment to combat wear.
- Machinery: Ceramic bearings, gaskets, and seals.
- High-Temperature Environments: Furnace liners, kiln furniture, and protection for temperature sensors.
Available Forms & Properties
- Thickness Options: Common thicknesses range from ultra-thin 0.15mm up to 5mm, with custom sizes available.
- Density: Typically around 3.6 to 3.9 g/cm³.
- Compressive Strength: >2600 MPa (with some specialized, high-density types exceeding 10,000 MPa).
These materials are often utilized in sectors such as coal mining, chemical processing, and semiconductor manufacturing to extend equipment lifespan and improve reliability.
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Web results
High-Alumina Ceramic
McMaster-Carr
https://www.mcmaster.com › products › high-alumina-ce...
McMaster-Carr
https://www.mcmaster.com › products › high-alumina-ce...
Choose from our selection of high-alumina ceramic, including over 225 products in a wide range of styles and sizes. Same and Next Day Delivery.
Custom High purity alumina ceramic substrate Supplier
novatekxm.com
https://www.novatekxm.com › high-purity-alumina-cera...
novatekxm.com
https://www.novatekxm.com › high-purity-alumina-cera...
High purity alumina ceramic substrate ; ✓High hardness, ✓High temperature resistance, ✓Chemical stability ; ✓Abrasion resistance, ✓insulativity, ✓Low friction ...Read more
GONNSDS Alumina Ceramic Sheets
Amazon.com
https://www.amazon.com › GONNSDS-Alumina-Ceram...
Amazon.com
https://www.amazon.com › GONNSDS-Alumina-Ceram...
This material has very high hardness, very high stiffness, very good corrosion resistance to chemicals at high temperature, or use temperature. They may be ...Read more
1/3/5/10 Pieces of Thin Square ALUMINA CERAMIC ...
Etsy
https://www.etsy.com › listing › 13510-pieces-of-thin-s...
Etsy
https://www.etsy.com › listing › 13510-pieces-of-thin-s...
This material has very high hardness, very high stiffness, very good corrosion resistance to chemicals at high temperature, or use temperature. They may be ...Read more
$8.91In stock$7.79 delivery
Alumina Sheet
Goodfellow Advanced Materials
https://www.goodfellow.com › ... › Alumina Sheet
Goodfellow Advanced Materials
https://www.goodfellow.com › ... › Alumina Sheet
Alumina Sheet is a high-purity aluminum oxide ceramic form characterized by exceptional hardness, electrical insulation capability, and resistance to high ...Read more
$327.00 to $373.00In stockFree delivery
99% High Purity Round Alumina Aluminum Oxide Ceramic ...
eBay
https://www.ebay.com › itm
eBay
https://www.ebay.com › itm
Alumina ceramic sheets (AI203) belong to special ceramics and feature high strength and high hardness. See full description.Read more
$15.84In stock$2.88 delivery
Wear-Resistant Ceramic Sheet Al2O3 Alumina | SAM
Stanford Advanced Materials
https://www.samaterials.com › wear-resistant-ceramic-she...
Stanford Advanced Materials
https://www.samaterials.com › wear-resistant-ceramic-she...
These ceramic sheets exhibit outstanding resistance to abrasion, erosion, and impact, significantly extending the lifespan of equipment and components. Al2O3Â ...Read more
96% Ceramic Substrate DIY Craft Wear Resistance ...
Ted's Pawn
https://tedspawn.com › products › Ceramic-Sheets-96-C...
Ted's Pawn
https://tedspawn.com › products › Ceramic-Sheets-96-C...
Shop Alumina Ceramic Sheet GONNSDS s - 96% Ceramic Substrate DIY Craft Wear Resistance,114mmx114mmx1mm Industrial Ceramic Sheet.
MSE PRO High Purity 99% Ceramic Alumina (Al2O3) Plate
MSE Supplies
https://www.msesupplies.com › products › mse-pro-high...
MSE Supplies
https://www.msesupplies.com › products › mse-pro-high...
High purity ceramic alumina plate (aluminum oxide, Al 2 O 3 ) has high melting point, high hardness and good chemical stability.Read more
$38.66 to $178.16In stock$26.21 delivery
10% off MSE PRO
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High-Purity Alumina (Al2O3) Plates
Advanced Ceramic Materials
https://www.preciseceramic.com › alumina-plate
Advanced Ceramic Materials
https://www.preciseceramic.com › alumina-plate
Our alumina ceramic plates maintain high strength and hardness at elevated temperatures and exhibit excellent electrical insulation, chemical resistance, wear ...Read more
Starting from $100.00In stock
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