Silicon Carbide (SiC) CNC Machining Services

Silicon Carbide (SiC) is one of the hardest and most thermally stable advanced ceramics available. It is ideal for high-precision CNC machining in applications demanding extreme wear resistance, high strength, and thermal shock performance. Commonly used in semiconductor, aerospace, energy, and industrial processing equipment.

Material Properties & Advantages

What is Silicon Carbide (SiC)?

Silicon Carbide (SiC) is a sintered ceramic compound composed of silicon and carbon. Known for its exceptional hardness and heat resistance, SiC is widely used in applications where high thermal conductivity, corrosion resistance, and structural integrity are critical.

Key Advantages of Silicon Carbide (SiC):

Ultra-High Hardness & Wear Resistance
– Ideal for abrasive and erosive environments

Superior Thermal Conductivity
– Outperforms most ceramics under thermal cycling

Excellent Corrosion Resistance
– Withstands acids, alkalis, and harsh chemicals

Low Thermal Expansion
– Enhances dimensional stability across temperature changes

High Temperature Resistance
– Operates reliably above 1,600°C

Silicon Carbide (SiC) Specifications & Datasheets

We offer CNC machining for high-purity sintered Silicon Carbide (SiC).

Silicon Carbide (SiC)

Hardness

Density

Thermal Conductivity

Electrical Resistivity

~25 GPa (Vickers Hardness)

3.1 g/cm³

120–200 W/m·K

10⁵ – 10⁶ Ω·cm

Wear Resistance

Chemical Resistance

Flexural Strength

Compressive Strength

Excellent

Exceptional

400 MPa – 500 MPa

≥ 3,800 MPa

Custom Alumina Material Options

Need a specific Silicon Carbide composition? We offer custom material options tailored to your project requirements. Contact us to discuss your needs.

Trusted by over 200 successful companies around the globe.

Machining Capabilities for Silicon Carbide (SiC)

Challenges & Solutions
SiC’s extreme hardness and brittleness require advanced tooling and techniques. Our specialized processes include:

Precision Diamond Grinding – Enables micron-level surface finish

Ultrasonic-Assisted Machining – Minimizes stress, improves accuracy

High-Precision CNC Milling & Turning – For tight tolerances and complex geometries

EDM for Conductive Grades – When applicable, allows intricate contouring

Tolerances Achievable for Machined SiC

Milling & Turning: ±0.005 mm

Grinding: ±0.002 mm

Applications of Silicon Carbide (SiC)

SiC excels in demanding, high-performance environments. Typical applications include:

Semiconductor: Etching components, wafer carriers, thermal chucks

Aerospace: High-temperature structural and wear parts

Energy: Heat exchangers, burner nozzles, mechanical seals

Industrial Equipment: Pumps, valves, nozzles, and precision bearings

Defense & Optics: Armor, mirrors, and optical blanks

Surface Finishing Options for Silicon Carbide (SiC)

To meet strict industry standards, we offer advanced surface treatments for SiC parts:

Lapping & Polishing

Achieves ultra-smooth surfaces with submicron-level roughness (Ra < 0.1 μm).

Diamond Grinding

Ensures high dimensional accuracy with minimal surface defects.

Laser Marking

Enables permanent identification or branding without compromising material integrity.

Chemical Etching

Used for controlled material removal and surface texturing.

Chemical Etching

Used for controlled material removal and surface texturing.

Efficiency

Moving Fast, Guaranteed.

We prioritize operational efficiency to reduce costs and expedite delivery.

Average response time within 2 hours
Global delivery in a matter of days
97.4% of parts shipped on time

Wide-Ranging Experience

Crafting Excellence Through Diverse Expertise

Our collaboration with diverse partners, each with unique machinery and expertise, enables us to overcome complex manufacturing challenges.

Over 2000 projects delivered
Expertise in multiple manufacturing processes
Expert DFM feedback

Massive Capacity

Ready to Meet Your Demands

Backed by 100+ carefully vetted, closely partnered experts, we fulfill your on-demand manufacturing needs at scale.

65+ CNC Manufacturing Partners
15+ Additive Manufacturing Partners
20+ Surface Finishing Partners

Quality Assurance

Ensuring Perfection, Delivering Excellence

Every part we ship is meticulously inspected in our in-house lab to ensure it meets consistent design and quality standards.

ISO 9001:2015 Certified
State-of-the-art QC Equipment
In-depth Inspection Reports Available

Additional Ceramics We Support

In addition to Alumina, we offer precision CNC machining services for other hard technical ceramics:

Alumina (Al₂O₃)

Alumina (Al₂O₃) is a durable ceramic used for high-strength, high-temperature parts in precision industries.

Zirconia (ZrO₂)

High fracture toughness and wear resistance.

Boron Nitride (BN)

Excellent thermal conductivity and electrical insulation.

Quartz & Glass Ceramics

Used for optical and semiconductor applications.

Silicon (Si)

Essential for semiconductor wafer processing.

Looking for more ceramic machining options? Check out our Alumina (Al₂O₃) CNC Machining services.

Request a Quote for Silicon Carbide CNC Machining Today

Looking for high-precision Silicon Carbide (SiC) machining? InstaVoxel delivers expert CNC machining, fast lead times, and superior quality. Contact us today to discuss your project.

Silicon Carbide (SiC) FAQs

How is Silicon Carbide (SiC) machined given its hardness?

We use diamond grinding and ultrasonic-assisted machining techniques to process Silicon Carbide (SiC) with high precision and minimal chipping.
What are the benefits of Silicon Carbide (SiC) over other ceramics?

Silicon Carbide (SiC) offers better thermal conductivity and higher hardness than Alumina or Zirconia, making it optimal for high-heat and abrasive settings.
What is Silicon Carbide (SiC) used for in CNC machining?

Silicon Carbide (SiC) is used in high-stress, high-heat environments such as semiconductor processing, aerospace thermal control, and advanced energy systems.