Silicon Carbide, is used due to its properties of high hardness (Mohs hardness
Black Silicon Carbide (SiC) Properties
- High Hardness
- Chemical Inertness
- High Thermal Conductivity
- Abrasion / Wear Resistance
- Abrasive
- Low Coefficient of Thermal Expansion
- Thermal Shock Resistance
- Strength at High Temperature Ranges
- Electrical Conductivity
Black Silicon Carbide (SiC) Application's
- Abrasives
- Sintered Parts
- Hot-Pressed Parts
- Reaction Bonded Parts
- Metal Matrix Composites
- Wire-saw
- Body Armor
- Vehicle Armor
- Heat Transfer / Thermal Management
- High Temp Sensors
- Ceramic Wear Parts
- Refractory
- Grinding
- Milling
- Lapping
Typical Silicon Carbide (SiC) Properties Sic is an artificial (man-made) mineral known for its very high hardness and abrasion resistance. Common applications include pump seals, valve components, and wear-intensive applications such as rollers and paper industry retainers.
Properties | Units | Test | Value |
Physical | |||
Chemical Formula | - | - | a-SiC |
Density, r | g/cm3 | ASTM C20 | 3.21 |
Color | - | - | dark gray |
Crystal Structure | - | - | hexagonal |
Water Absorption | % @R.T. | ASTM C373 | 0.0 |
Hardness | Moh's | - | 9 - 10 |
Hardness | knoop (kg/mm2) | Knoop 100g | 2800 |
Mechanical | |||
Compressive Strength | MPa @ R.T. | ASTM C773 | 1725 - 2500 |
Tensile Strength | MPa @ R.T. | ACMA Test #4 | 310 |
Modulus of Elasticity | GPa | ASTM C848 | 476 |
Flexural Strength (MOR) | MPa @ R.T. | ASTM F417 | 324 |
Poisson's Ratio, u | ASTM C818 | 0.19 | |
Fracture Toughness, KIc | MPa x m1/2 | Notched Beam Test | 4.0 |
Thermal | |||
Max. Use Temperature | ºC | No load cond. | 1400 |
Thermal Shock Resistance | DT (ºC) | Quenching | 350 - 500 |
Thermal Conductivity | W/m-K @ R.T. | ASTM C408 | 41 |
Coefficient of Linear Thermal Expansion, al | mm/m-ºC (~25ºC through ±1000ºC) | ASTM C372 | 5.12 |
Specific Heat, cp | cal/g-ºC @ R.T. | ASTM C351 | 0.15 |
Electrical | |||
Dielectric Constant | 1MHz @ R.T. | ASTM D150 | 10.2 |
Dielectric Strength | kV/mm | ASTM D116 | - |
Electrical Resistivity | Wcm @ R.T. | ASTM D1829 | 108 |