Highly Polished Silicon Carbide (SiC) Sheets
Inquiry NowProduct Description
SiC Polished Sheets – High-Precision Silicon Carbide Plates for Optical & Industrial Applications
M-Kube supplies highly polished silicon carbide (SiC) sheets across Australia, designed for optical, electronic, and industrial applications. Known for their exceptional hardness, wear resistance, chemical stability, and high-temperature resistance, our SiC polishing plates are widely used where durability and precision are critical.
As a trusted SiC polished sheet supplier, M-Kube offers mirror-polished SiC wafers, plates, and highly polished sheets, available in standard and custom dimensions to meet advanced industry requirements.
Our polished SiC sheets are manufactured using advanced processes to ensure superior quality and finish:
- Acheson Process – the most widely used method, involving the reaction of silica with carbon at high temperatures.
- Reaction Bonding (RBSiC/SiSiC) – combines silicon and carbon powders, followed by sintering, producing high-strength SiC for complex shapes.
- Pressureless Sintering (SSiC) – delivers high-purity silicon carbide with excellent strength and thermal stability.
- Polishing & Finishing – due to SiC’s extreme hardness, specialized polishing methods (laser cutting, ultrasonic wave grinding, and precision machining) are employed to achieve mirror-polished SiC sheets with ultra-flat tolerances.
SiC Polished Sheets: Technical Specifications
| Technical Specification | |||||
| Item | Unit | Data | |||
| RBSiC (SiSiC) | NBSiC | SSIC | RSIC | ||
| SiC | W% | 80 | 80 | 99 | 98-99 |
| Free Silicon | W% | 20 | 0 | 0 | 0 |
| Si3N4 | W% | 0 | 20 | 0 | 0 |
| Max temperature of Application | °C | 1380 | 1550 | 1600 | 1650 |
| Density | g/cm3 | 3.02 | 2.8 | 3.10 | 2.65-2.75 |
| Porosity | Vol% | 0 | 12 | 0 | 15-16 |
| Flexure Strength 20°C | Mpa | 250 | 160 | 380 | 90 |
| 1200°C | Mpa | 280 | 180 | 400 | 100 |
| Young’s Modulus 20°C | Gpa | 330 | 220 | 420 | 240 |
| Coefficient of Heat Conduction 1000°C | W/m,k | 45 | 15 | 74 | 35 |
| Coefficient of Thermal Expansion | K-1×10- | 4.5 | 5.0 | 4.1 | 4.6 |
| Hardness | kg/mm | 2600 | 2600 | 2800 | – |
Key Features of Polished SiC Sheets
- Manufactured from high-purity silicon carbide ceramics
- Available as SiC highly polished sheets and plates
- Mirror-finished surface with ultra-flat tolerance
- Excellent hardness and wear resistance
- Superior thermal conductivity and low thermal expansion
- Resistant to acids, alkalis, and corrosive environments
- Competitive SiC polished sheet price for bulk and custom orders
At M-Kube, we supply silicon carbide products in all key grades: RBSiC (Reaction-Bonded Silicon Carbide, SiSiC), NBSiC (Nitrogen-Bonded Silicon Carbide), SSiC (Pressureless Sintered Silicon Carbide), and RSiC (Recrystallized Silicon Carbide), offering tailored performance for filtration, structural, optical, and high-temperature applications.
Achieving precision tolerances and superior surface finishes on SiC highly polished sheets requires advanced machining. Below are typical specifications:
Dimensional Tolerances
- General Precision (as-sintered): ±0.2 to ±0.5 mm
- Fine Precision (ground & polished): ±0.01 to ±0.05 mm
- Ultra-Precision (optical/semiconductor): ±0.002 to ±0.005 mm
Surface Finish (Ra – Roughness Average)
- As-Sintered: Ra 1–3 μm
- Fine Ground: Ra 0.1–0.5 μm
- Polished (Mirror Finish): Ra 0.01–0.05 μm
- Ultra-Polished (Optical/Semiconductor Grade): Ra <0.005 μm (5 nm)
Flatness
- Standard: 10–50 μm per 100 mm
- High-Precision Applications: 5 μm per 100 mm
- Optical/Semiconductor: 1–2 μm per 100 mm
Thickness Tolerance
- General: ±0.1 mm
- Precision Machined: ±0.01–0.05 mm
- Ultra-Precision: ±0.005 mm
Parallelism
- Standard: 50–100 μm
- Precision Applications: 10–20 μm
- Ultra-Precision: <5 μm
Edge & Corner Tolerances
- Chamfered Edges: ±0.1 mm (to prevent chipping)
- Sharp Edges: ±0.05 mm
Applications of SiC Highly Polished Sheets
Our polished SiC wafers and sheets are widely used in:
- Optical Applications – SiC mirror-polished sheets for reflective and optical systems
- Semiconductor Industry – substrates and components requiring flatness and stability
- Laboratories & Research – polished SiC wafers for advanced material studies
- Industrial Equipment – wear-resistant and thermally stable components
Why Choose M-Kube – SiC Polished Sheet Supplier in Australia?
- Trusted supplier of SiC highly polished plates and sheets
- Expertise in mirror-polished silicon carbide ceramic sheet fabrication
- Custom sizes and specifications available for industry-specific needs
- Competitive pricing with SiC polished sheets for sale across Australia
- Fast delivery and technical support for research and industrial projects
At M-Kube, all our ceramic and refractory products are manufactured in ISO-certified facilities with the capability to meet and comply with ASTM, ISO, and other international standards. This ensures every product delivers consistent quality, reliability, and performance, whether you require standard parts or fully customized solutions.
Buy SiC Polished Sheets in Australia – Request a Quote
Looking for SiC polished sheets or SiC highly polished plates for sale? M-Kube supplies silicon carbide mirror-polished sheets, wafers, and plates with precision finishing and guaranteed quality.
📞 Call +61-478-594-746
📧 Email info@mkube.com.au
For expert advice or to request today’s SiC polished sheet price, contact M-Kube today.
Product FAQ's
What is a SiC mirror polished sheet?
A SiC mirror polished sheet is a silicon carbide plate with nanometer-level flatness and ultra-smooth reflective surface. It is commonly used in:
- Laser optics
- High-power mirrors
- Precision measurement systems
- Semiconductor wafer handling
How much does a SiC polished sheet cost?
The SiC polished sheet price depends on:
- Dimensions and thickness
- Polishing grade (single-side or double-side mirror polish)
- Purity and SiC type (SSiC, RBSiC, CVD-SiC)
- Application (optical, semiconductor, mechanical)
- Order size (prototype vs. bulk)
Since polishing requires precision equipment and time, mirror-polished SiC plates are more expensive than standard plates.
Where can I buy SiC highly polished plates for sale?
You can find SiC highly polished plates for sale from:
- Semiconductor consumable suppliers
- Optical material distributors
- Custom SiC ceramic manufacturers
Always verify the surface flatness (Ra values), batch quality reports, and polishing certification before purchase.
What tolerances and surface finishes can be achieved on SiC polishing plates?
- Surface flatness: within a few microns.
- Surface roughness (Ra): ≤0.02 µm (mirror polish).
- Thickness tolerance: ±0.01–0.05 mm.
High-end SiC mirror polished sheets meet semiconductor and optical-grade precision.
Can SiC polishing plates be customized?
Yes — most SiC polished sheet suppliers offer:
- Custom dimensions (round, square, irregular shapes).
- Single-side or double-side polishing.
- Holes, slots, and wafer carrier machining.
This makes custom SiC highly polished sheets suitable for different industries (semiconductors, optics).
How do I choose a reliable SiC polished sheet supplier?
Look for:
- Proven experience in semiconductor or optical-grade SiC.
- ISO/ASTM certification.
- Capability for single-side and double-side mirror polishing.
- Batch quality testing (flatness, roughness, purity).
A good SiC polished sheet supplier should provide traceability and technical support.
How do I request a quotation for SiC polishing plates?
To get an accurate SiC polished sheet price, provide the supplier with:
- Dimensions & thickness
- Surface polishing requirements (single/double-sided)
- Material grade (SSiC, RBSiC, CVD-SiC)
- Quantity (prototype or bulk order)
This ensures precise pricing from your SiC polished sheet supplier.
Related products
- Phone: +61-478-901-616
- Address:
8 Adaluma Ave,
Pooraka SA 5095,
Australia - Email: info@mkube.com.au