Materials Center
Technical Ceramic Material Comparison & Selection Guide
Compare the current FreeWill Material advanced ceramic portfolio by mechanical, thermal and application requirements. Use the interactive data for first-round screening, then confirm the grade against your drawing and operating conditions.
Browse Materials
Material Systems
Technical Ceramic Material Performance Comparison
Density
Unit: g/cm³
Silicon Carbide
3.10g/cm³
Silicon Nitride
>3.20g/cm³
Alumina
3.70–3.90g/cm³
Boron Nitride
1.90–2.00g/cm³
Aluminum Nitride
3.30g/cm³
Zirconia
5.60–6.00g/cm³
Typical bulk density at room temperature. Values vary with composition, porosity and manufacturing route. Chart positions use the midpoint of a published manufacturer range where applicable; final values require grade and test-method confirmation.
Detailed Material Parameters
Material Details
Silicon Carbide
Core Properties
| Property | Typical screening reference |
|---|---|
| Formula | SiC |
| Material system | SSiC, RBSiC, RSIC and SiC-based ceramics |
| Density | 3.10 g/cm³ typical |
| Electrical behavior | Usually semiconductive; resistivity depends on grade |
Mechanical Properties
| Property | Typical screening reference |
|---|---|
| Hardness | ≈20.6 GPa (converted from HV1 2100) |
| Flexural strength | 400 MPa typical at room temperature |
| Fracture toughness | 4.0 MPa·m¹/² typical |
Thermal Properties
| Property | Typical screening reference |
|---|---|
| Maximum service temperature | 1,600 °C in air, no-load screening reference |
| Thermal conductivity | 100 W/(m·K) at room temperature |
| Thermal-shock selection profile | high |
Best-Fit Conditions
- Extreme wear
- High temperature
- Corrosive media
- Thermal shock
Typical Applications
- Mechanical seal rings, pump sleeves and bearing components
- Kiln furniture, beams, rollers and radiant tubes
- Nozzles, liners and wear parts for abrasive fluids
- Semiconductor process carriers and thermal processing fixtures
Engineering Comparison Notes
Choose SiC over alumina when high heat flow, corrosion and severe wear occur together.
Choose SSiC when density, corrosion resistance and tight performance are critical; RBSiC can be attractive for large kiln and structural parts.
Engineering Selection Guide
Start with the operating conditions, not the material name.
A reliable selection also depends on geometry, atmosphere, contact mode, finishing and inspection requirements. Share these inputs before finalizing a grade.
Ask an Engineer- 1What temperature range and atmosphere will the component experience?
- 2Will the part face wear, sliding contact, impact or cyclic mechanical load?
- 3Is corrosion, molten-metal contact or process-gas exposure involved?
- 4Is electrical insulation required while heat must pass through the component?
- 5How important are thermal shock and rapid heating or cooling cycles?
- 6Which dimensions, tolerances and surface finishes are function-critical?
- 7What drawing, quantity and inspection requirements define the RFQ?
Material Selection RFQ
Need a grade-specific material recommendation?
Send the drawing, working temperature, atmosphere, medium, load, quantity and inspection requirements for an engineering review.