Alumina ceramic disc with high temperature wear resistance precise technical alumina discs
- Brand：Mingrui
- Material：Alumina ceramic
- Precision：0.001mm
- Features：Heat resistance High purity
- Color：White Blue Ivory Black etc.
- Customized：Yes
Alumina Ceramic Discs
High precision Alumina Ceramic Parts
Ceramic Discs from Mingrui Ceramic are made of alumina in different purities and sizes (diameter, thickness) and different properties (pore diameter, hydrophilic, lipophilic). As a alumina ceramic disc manufacturer, Mingrui is working to enhance the performance and prelong service life by using the material best suited to your application.
Custom Alumina Discs:
Alumina purity available: 95%, 96%, 97%, 99%, 99.5%, 99.7%, 99.99%
Sizes (standard) imperial and metric:0.25 – 600 mm (0.0098”-23.62”) diameter, with 0.2 – 120 mm thickness
Shapes: Customize according to your Drawings, dimensions, or samples
Alumina Disks can be polished on one side (Ra < 0,1 µm)
Material: α-Al2O3 (high quality alumina ceramic, 95-99.99%)
Available modifications: Oil-wet (hydrophobized) discs
Special coatings on request: γ-Al2O3 (3-5 nm), meso-TiO2 (3.5-15 nm), micro-TiO2 (≈1.0nm), Silica (<0.5 nm)
Operation Conditions:
Max Working Temperature: 1750 °C Continious operating temperature (exceptions: hydrophobic discs, certain coated discs)
Pressure: Depending on morphology. Temperature, pressure en pH values are influenced by type of solvent/ medium during use.
Mean pore size/diameter availability：
50 nm (0.05 micron) with theoretical entry pressure 57,6BAR (835 PSI)
80 nm (0.08 micron) with theoretical entry pressure 35,5 BAR (507PSI)
150 nm (0.15 micron) with theoretical entry pressure 18,9BAR (275PSI) |
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Alumina Ceramic Types:
High purity alumina ceramics:
99.99% Alumina ceramic; 99.9% Alumina ceramic
Ordinary alumina ceramics:
99.7% Alumina ceramic,99.5% Alumina ceramic,99% Alumina ceramic,97% Alumina ceramic,96% Alumina ceramic,95% Alumina ceramic.
Alumina ceramic plate Characteristics:
Wear resistance
Electric Insulation
Corrosion Resistance
Greater mechanical strength
High Temperature Resistance
Cost-effective
Long Service Life
Al2O3 Ceramic Disc Applications
Al2O3 ceramic discs are widely used in semiconductor equipment, electrical insulation, high-temperature systems, precision machinery, sensors, and industrial automation due to their excellent hardness, wear resistance, electrical insulation properties, and high-temperature stability. Alumina disks can be used as ceramic substrates, ESC chunks, ceramic wafers, ceramic insulation parts, ceramic flanges, etc.
Production Process and Machining Precision:
Raw materials - Forming - Sintering - Machining & Grinding - Quality Inspection - Cleaning - Packaging
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Precision of manufacture |
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Dimensional accuracy |
Up to 0.001mm |
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Smoothness |
Highest possible mirror |
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Concentricity |
Up to 0.003mm |
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Parallelism |
Up to 0.002mm |
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The inner hole tolerance |
The minimum 0.005mm |
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Straight flute |
The narrowest 0.1x100mm |
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The thickness of the size |
Minimum to 0.02mm |
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The screw thread |
Minimum internal thread M2 |
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Cylindricity |
Up to 0.004mm |
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The linear tolerance |
Up to 0.001mm |
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The smallest aperture |
The minimum 0.07mm |
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Precision process |
CNC maching,grinding,lapping |
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Surface finish |
Glazed,polishing or metallized |
Visual quality:
1. No cracks, no dark dots, no contamination and sharp edges;
2. Evenly distributed glaze with very smooth surface |
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Alumina Ceramic Technical Data Sheet:
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Properties |
Unit |
Alumina (AL2O3) |
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AL2O3≥95 |
AL2O3≥99 |
AL2O3≥99.5 |
AL2O3≥99.8 |
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Volumetric density |
g/cm3 |
3.7 |
3.80-3.85 |
3.85 |
3.9 |
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Hardness |
HRA≥ |
86 |
88 |
88 |
88 |
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Flexural Strength |
Mpa≥ |
300 |
350 |
400 |
400 |
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Maximum temperature |
℃ |
1500 |
1500 |
1500 |
1500 |
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Line expansion coefficient |
×10-6/℃ |
7.5 |
8.2 |
8.2 |
8.2 |
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Dielectric constant |
εr(20℃,1MHz) |
9 |
9.2 |
9.2 |
9.2 |
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Media loss |
tanδ×10-4,1MHz |
3 |
2 |
2 |
2 |
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Volumetric resistivity |
Ω·cm(20℃) |
1013 |
1014 |
1014 |
1014 |
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Breakdown strength |
KV/mm,DC≥ |
20 |
20 |
20 |
20 |
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Acidic resistance |
mg/cm2≤ |
0.7 |
0.7 |
0.7 |
0.7 |
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Alkaline resistance |
mg/cm2≤ |
0.2 |
0.1 |
0.1 |
0.1 |
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Abrasion resistance |
g/cm2≤ |
0.2 |
0.1 |
0.1 |
0.1 |
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Compressive strength |
Mpa≥ |
2500 |
2500 |
2500 |
2800 |
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Flexural Strength |
Mpa≥ |
200 |
350 |
350 |
350 |
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Elastic modulus |
Gpa |
300 |
350 |
350 |
350 |
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Poisson-Pine ratio |
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0.2 |
0.22 |
0.22 |
0.22 |
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Thermalcoefficient |
W/m·K(20℃) |
20 |
25 |
25 |
25 |
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Alumina Ceramic Disc Sheet FAQs:
1. Do you have complete material technical data sheets(TDS) and test reports?
Yes, we do. Please contact admin@cerampart.com for detailed information or further consultation, and we will answer within 24 hours.
2. What is your MOQ? Do you support prototyping?
Our MOQ is typically 1-10 pieces. It depends on size, material, and production process. We support prototype production and small-batch orders for testing and validation before mass production.
3. Are you a direct manufacturer?
Yes, we are a direct ceramic manufacturer located in Yongzhou, Hunan, China. We have a complete integrated production line, supported by our R&D team, experienced engineers, and experienced technicians.
4. Do you customize various ceramic discs?
Yes, we customize different types of ceramic discs with various structures, dimensions, and ceramic materials to meet different application requirements.
5. What is the typical lead time for alumina ceramic discs?
The typical lead time is around 3–35 working days, depending on the order quantity, product complexity, and production requirements.
6. Do you provide technical support and after-sales service?
Yes, of course. We have a professional engineering team with more than 20 engineers for technical support, as well as a complete QC team and inspection equipment to ensure product quality and provide after-sales support.
Customization & Machining Service：
As a professional manufacturer of industrial ceramic components.We can custom the sepcial specifications of alumina ceramic disc or other ceramic parts.High quality,Factory price, on-time delivery, High composition of ceramics.
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For more information about ceramics parts,please contact our engineers in time >>> |
 
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Moble: +86 18122974730
Phone: +86 746 3386888
Email: admin@cerampart.com
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