Black Silicon Carbide

Black Silicon Carbide (SiC) is a synthetic, highly durable, and extremely hard material, created by fusing silica and carbon at high temperatures. It exhibits superior qualities such as high thermal conductivity, low thermal expansion, and excellent resistance to wear, corrosion, and abrasion. Its crystalline structure, comprised of irregular, sharp-edged particles, gives it its characteristic black color and makes it an ideal abrasive for various applications.

SiC is widely used in the manufacturing of grinding wheels, cutting tools, and abrasive papers due to its impressive cutting and grinding capabilities. It is also employed in the electronics industry for the production of semiconductors, diodes, and transistors, thanks to its superior thermal and electrical conductivity. Moreover, black SiC has found applications in refractory materials, ceramic components, and wear-resistant parts, as well as in advanced armor systems and aerospace engineering.

  • SiC: 97.5%-99.5%
  • Fe₂O₃: 0.05%-0.25%
  • F.C: 0.05%-0.25%
  • Specific Gravity: 3.90g/cm³

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Available Size

  • Black Silicon Carbide Split
  • 6×8, 10×16, 16×35, 35×70, 30×60…
  • Black Silicon Carbide Macro Grits
  • F12- F220, P12- P220
  • Black Silicon Carbide Micro Powder
  • F230- F1200, P240- P1200


  • Hardness: Black Silicon Carbide has a Mohs hardness of 9.5, which is very close to diamond (10 on the Mohs scale). This property makes it highly effective for abrasive applications.
  • High thermal conductivity: Due to its strong covalent bonds and crystalline structure, Black Silicon Carbide exhibits excellent thermal conductivity, making it suitable for high-temperature applications.
  • Chemical resistance: Black Silicon Carbide is highly resistant to chemicals, acids, and alkalis, making it a suitable material for use in harsh chemical environments.
  • Low thermal expansion: The material has a low coefficient of thermal expansion, which reduces the likelihood of cracking or failure in high-temperature applications.
  • Electrical conductivity: Black Silicon Carbide is a semiconductor, which means it has electrical conductivity properties that can be manipulated depending on the specific requirements of an application.


  • Abrasives: Due to its hardness and sharp edges, Black Silicon Carbide is widely used in the manufacture of grinding wheels, sandpapers, and cutting tools.
  • Refractories: Its high thermal conductivity and low thermal expansion make it an excellent material for use in refractory bricks, kiln furniture, and other high-temperature applications.
  • Ceramics: Black Silicon Carbide is used as an additive in the production of advanced ceramics, enhancing their mechanical properties and wear resistance.
  • Electronics: The material’s semiconducting properties make it an ideal candidate for use in high-power electronic devices, such as power transistors and light-emitting diodes (LEDs).
  • Metallurgy: Black Silicon Carbide is employed as a deoxidizing agent in the steelmaking process, helping to remove oxygen from molten metal and improve its quality.
  • Aerospace: Its lightweight and high strength properties make Black Silicon Carbide an attractive material for aerospace components, such as engine parts and heat shields.


Description of itemsBlack Silicon Carbide
Melting point (℃)2250
Maximum service temperature (℃)1900
Specific Gravity3.90g/cm³
Mohs Hardness9.2
ProductionSizesMacro GritsPP12 P16 P20 P22 P24 P30 P36 P40 P46 P54 P60 P70 P8O P90 P100 P120 P150 P180 P220
FF12 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220
PowderPP240 P280 P320 P360 P400 P500 P600 P800 P1000 P1200
FF230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 
JIS#240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000


20 Ton

Silicon carbide abrasives are harder and sharper than aluminum oxide abrasives, making them more aggressive and faster cutting. However, they are also more brittle, which can lead to faster breakdown and shorter abrasive life.

Grit sizes for silicon carbide abrasives range from coarse (24 grit) to ultrafine (1200 grit) and are used for different applications, from rapid material removal to precision polishing.

To choose the right silicon carbide abrasive, consider factors like the material being worked on, the desired finish, the abrasive life, and the equipment being used. Generally, harder materials require finer grits, while softer materials can be worked with coarser grits.

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Founded in 2001, HSA is a leading provider of Silica Fume and Abrasives in China, and also the premium source of high-performance Products for concrete and abrasives industries.

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