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Grade: Hot-Pressed
Formula: SiC
Form: Granule
Material: Silicon Carbide
Commodity: Ceramics
Nominal Granule Size: 1mm

Hot-pressed Silicon Carbide Granules

Hot-pressed Silicon Carbide Granules are advanced ceramic feedstock materials recognized for their extreme hardness, thermal stability, and chemical inertness. Their granular form makes them highly adaptable for further processing into high-performance ceramics, composites, and precision-engineered components. Industries such as aerospace, defense, optics, and energy rely on SiC granules to produce lightweight structural components, protective armor, and high-temperature refractories. Specific applications include the fabrication of high-precision optical mirrors and windows, structural ceramics with improved fracture toughness via additive modifications, and components for high-temperature engines or reactors. Research demonstrates that additives such as boron and titanium carbides significantly enhance densification and mechanical strength, while hot-pressing techniques yield microstructurally homogeneous SiC with subnanometer optical finishes suitable for advanced optics. In both industrial and scientific contexts, Hot-pressed Silicon Carbide Granules serve as a versatile raw material, enabling breakthroughs in durable, lightweight, and high-performance ceramic technologies.
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Material Properties for Ceramics

Chemical Resistance
Element Value
Acids - concentrated Good
Acids - dilute Good
Alkalis Good-Poor
Halogens Good-Poor
Metals Fair
Electrical Properties
Element Value
Dielectric constant 40
Volume resistivity( Ohmcm ) 10³-10⁵@25
Physical Properties
Element Value
Apparent porosity( % ) 0
Density( gcm⁻³ ) 3.15
Thermal Properties
Element Value
Melting point( C ) 2650-2950
Upper continuous use temperature( C ) 1500-1650
Specific heat( J K⁻¹ kg⁻¹ ) 670-710@25°C
Thermal conductivity( W m⁻¹ K⁻¹ ) 90-160@20°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ ) 4.5@20-1000°C
Mechanical Properties
Element Value
Tensile modulus( GPa ) 200-500
Hardness - Vickers( kgf mm⁻² ) 2400-2800
Shear strength( MPa ) 210-380
Tensile strength( MPa ) 400
Pultrusions
Element Value
Compressive strength( MPa ) 1000-1700

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