Advantages of Silicon Carbide Powder
- Super hard, just below diamond—perfect for grinding and polishing manufacturing
- Excellent thermal conductivity—spreads heat fast, making it a solid choice for electronics or high-temp settings.
- When exposed to harsh stuff like acids or alkalis, maintain outstanding chemical stability
- Strong wear resistance, stands up to wear and tear, helping machines and tools keep going longer.
What is Silicon Carbide Powder？
Silicon carbide powder is a hard, multi-use material that’s widely used across industries because of its strong performance. It’s made from silicon and carbon atoms arranged in a crystal structure. There are two main types: one with a hexagonal shape (α-SiC), which holds up better in high heat, and one with a cubic shape (β-SiC), which is more stable at lower temperatures.
Silicon Carbide Powder for Sale
Providing various grades and purities of Silicon Carbide Powder for advanced industrial applications.
What Is Silicon Carbide Powder Used For?
SiC AbrasivesUsed for precision grinding and polishing on metals, ceramics, glass, and more.
SiC Cutting ToolsIdeal for high-efficiency cutting and machining thanks to their hardness and wear resistance.
SiC RefractoriesUsed in high-temp furnaces, kiln linings, and thermal insulation setups.
SiC-based Semiconductor DevicesKey in power electronics and LED production, built to handle high voltage and heat.
Advanced CeramicsPerfect for high-strength, corrosion-resistant, and heat-stable SiC ceramic parts.
SiC Brake Discs and ClutchesPopular in cars, planes, and motorsports for being lightweight, heat-conductive, and tough.
Features of Silicon Carbide Powder
Mohs hardness of 9.5, great for abrasives.
Quickly disperses heat, ideal for electronics.
Resists oxidation and corrosion.
Keeps strength even at high temps.
Wide bandgap makes it work well in tough conditions.
Outperforms traditional silicon in many devices.
Resists wear and heat, lasts longer.
Handles high stress and heat with ease.
Why Choose Newthink Silicon Carbide Powder?
Choosing Newthink means choosing stable quality, for we deliver exactly what you need.
Over 14 years’ experience delivering advanced ceramic solutions worldwide.
To meet your large order demands and ensure steady delivery times.
Lean production is conducted in our workshop to control costs and offer customers efficient cost-saving solutions.
With ISO certification, we strictly control every step to ensure stable and reliable product quality.
Silicon Carbide Powder Production Workshop
Newthink silicon carbide powder is produced with high-purity raw materials and advanced processing equipment. The fabrication process includes melting, crushing, grinding, and precision screening, all conducted under strict quality control.
We use advanced equipment including high-efficiency crushers, jet mills, classifiers, and particle size analyzers to ensure consistent particle distribution and stable product quality.
Packaging Options for Silicon Carbide Powder
We offer a variety of packaging solutions to suit different application needs—from small laboratory quantities to large-scale industrial volumes.
Capacity: 25 kg, 50 kg, 100 kg
Features: Often lined with a plastic bag to prevent contamination and moisture ingress.
Usage: Suitable for larger quantities used in industrial applications.
Capacity: 1 kg, 5 kg, 10 kg, 25 kg
Features: Multi-layered bags (paper or plastic) with an inner liner for moisture protection.
Usage: Common for smaller quantities and easier handling in laboratory or small-scale industrial settings.
Capacity: 500 kg, 1000 kg, 1500 kg
Features: Made from woven polypropylene with lifting loops for easy handling by forklift or crane.
Usage: Ideal for large-scale industrial use and transportation.
Capacity: 100 g, 250 g, 500 g, 1 kg
Features: Screw-top lids for airtight sealing, often used for high-purity or specialized grades of silicon carbide powder.
Usage: Laboratory use, research, and small-scale manufacturing.
Property for Silicon Carbide Powder
The table below shows the key physical, thermal, mechanical, and purity characteristics of silicon carbide powder across various grades and grain sizes.
- Datasheet
| Property | Property | Details |
| Physical Properties | Molecular formula | SiC |
| Molecular weight | 40.10 g/mol | |
| Crystal structure | Hexagonal (α-SiC), Cubic (β-SiC) | |
| Density | α-SiC: 3.21 g/cm³; β-SiC: 3.22 g/cm³ | |
| Melting point | Sublimates at ~2700°C (4892°F) | |
| Hardness | 9.5 (Mohs scale) | |
| Particle size | Submicron to several hundred microns | |
| Color | Black, Green | |
| Thermal Properties | Thermal conductivity | α-SiC: 120-270 W/m·K; β-SiC: 20-130 W/m·K |
| Coefficient of thermal expansion | α-SiC: 4.0×10⁻⁶/°C at 20°C; β-SiC: 4.2×10⁻⁶/°C at 20°C | |
| Specific heat capacity | 0.67 J/g·K at 25°C | |
| Maximum operating temperature | Up to 1600°C (inert/reducing atmosphere); lower in oxidizing environment | |
| Mechanical Properties | Young’s modulus | α-SiC: 410-490 GPa; β-SiC: 330-370 GPa |
| Flexural strength | 400-600 MPa | |
| Fracture toughness | 3-4 MPa·m¹/² | |
| Poisson’s ratio | 0.14-0.18 | |
| Purity | Typical purity | ≥ 99.0% |
| Common impurities | Free carbon, iron, aluminum, silica | |
| Grain Size & Grade | Grain size | Fine (submicron) to coarse (several hundred microns) |
| Purity grade | Industrial grade (95-98%), High purity grade (≥99%) |
Related Products
Refractory Plate/SlabFlat plate for high-temp load or separation.
Silicon Carbide Mechanical SealProvides exceptional wear and corrosion resistance for pumps, valve, and rotating equipment.
Silicon Carbide Body ArmorLightweight yet hard protection for personal and vehicle ballistic defense.
Engineered balls with corrosion resistance commonly used in chemical equipment.
Silicon carbide can exist in two main crystal forms:
Hexagonal (α-SiC): More stable at higher temperatures.
Cubic (β-SiC): More stable at lower temperatures.
Silicon carbide powder can be made using a few different methods, each with its own approach and best-use case:
Acheson Process
The most common method—heats a mix of silica sand and petroleum coke in an electric furnace at very high temps to create silicon carbide.
Carbothermal Reduction
Uses carbon to reduce silicon dioxide or similar materials at lower temps compared to the Acheson process.
Microwave Synthesis
Applies microwave heating to quickly produce silicon carbide powder, using less energy.
Chemical Vapor Deposition (CVD)
A gas-based method where vapor-phase chemicals react to form a thin layer or fine powder of silicon carbide on a surface.
Sol-Gel Process
Starts with liquid silicon precursors that turn into a gel, then it’s dried and heated to create nano-sized silicon carbide powder.
Combustion Synthesis (SHS/VCS)
A self-sustaining reaction that kicks off with heat and continues on its own to form silicon carbide, thanks to its strong exothermic nature.
Silicon carbide is used across many industries. It’s known for being incredibly hard, handling heat like a champ, resisting chemical corrosion, and staying strong under pressure. The following are some examples of applications.
Abrasives: Thanks to its extreme hardness, SiC can be used for making grinding wheels, sandpaper, cutting tools, polishing compounds, and honing sticks. If you’re working with materials like ceramics, glass, or tough metal alloys, green SiC powder (which is extra pure) is the go-to choice for precision grinding.
Refractories: SiC holds up under extreme heat and sudden temperature changes, making it ideal for things like kiln linings, furnace parts, refractory bricks, heating elements, and crucibles. Basically, anywhere you need materials that won’t crack or melt when things get hot.
Semiconductor Industry: With its strong heat resistance and high voltage tolerance, SiC is a rising star in high-power electronics. It’s now used in everything from power devices and high-temp electronics to LED lighting systems.
Advanced Ceramics: Silicon carbide powder is common in advanced ceramic manufacturing because it’s super hard, durable, and resistant to wear and corrosion. You’ll find it in ceramic bearings, mechanical seals, cutting tools, and even ballistic armor.
Other Cool Uses:
Metallurgy: Helps remove oxygen in steelmaking.
Automotive: Found in brake pads, clutch parts, and engine components.
Aerospace & Defense: Used to create lightweight, high-strength parts and bullet-resistant materials.
Nuclear: Withstands radiation and harsh chemicals, making it a good fit for fuel pellets and waste containers.
Composites: Boosts the strength and durability of composite materials.
No, diamond has a Mohs hardness of 10, while silicon carbide has a hardness of 9.5, making it one of the hardest materials, just slightly less than diamond.
Silicon carbide is a ceramic material. It has properties like high hardness, chemical resistance, and thermal stability that are typical of ceramics.
Green silicon carbide powder has a purity above 99%. It has higher hardness, sharper crystal edges and better cutting ability. Black silicon carbide powder has a purity of about 98.5%, tougher and less brittle. It’s perfect for industrial use like heavy grinding.
Green SiC is preferred for precision grinding and polishing of hard and brittle materials like glass and ceramics. Black SiC is commonly used for coarse grinding, refractory materials and metal surface finishing.
Your requirements are the No.1 consideration in making the choice. When precision and purity are required, green SiC powder is favorable; if toughness and cost considerations are also important, it would be better to opt for black.
① Mechanical Properties
SiC powder is hard and sharp, making it effective when processing hard and brittle materials. The sharp edges chip and remove material efficiently, but they wear fast. Alumina powder is a little softer, but it tends to maintain its cutting edges longer because of its toughness, and it usually produces smoother cutting action on more difficult metals.
SiC is brittle. It will break under heavy pressure. This results in self-sharpening characteristics, but will adversely affect tool life. Alumina is tough enough to withstand the pressures when grinding high-strength alloys.
② Thermal Properties
SiC powder conducts heat efficiently and prevents overheating during high-speed grinding. Alumina maintains stability at high temperatures. It is suitable for continuous metal processing.
③ Industrial Applications
SiC powder is ideal for glass, ceramics, cast iron and hard alloys. In these processes, cutting speed and sharpness are needed. Alumina powder is preferred for carbon steel, stainless steel, and metal alloys that require high durability and longer abrasive life.
In summary, SiC excels in sharpness and heat dissipation, while Alumina stands out for toughness and longevity. Choosing between them depends on whether the workpiece is hard and brittle or tough and ductile. You can also contact us. Newthink will provide suitable suggestions based on your description.
