Alumina Ceramic Insulators
Alumina Ceramics Component
SKU: FWM/ALU-INS-001
- Material
- Alumina
- Size
- Custom by drawing
- MOQ
- By quotation
- Applications
- Electrical Equipment
Drawing-based alumina ceramic insulators for electrical, electronic and industrial equipment assemblies.
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Product Description
Drawing-based alumina ceramic insulators for electrical, electronic and industrial equipment assemblies.
Alumina ceramic insulators include rings, washers, spacers and custom bodies used to separate conductive parts or support electrically isolated assemblies.
The ceramic body provides electrical separation while supporting the assembly mechanically, including where heat or wear makes a polymer spacer unsuitable.
Product Features
- Electrical Insulation
- Custom Insulator Geometry
- Thermal Stability
- Custom machined interfaces
Typical Applications
- Electrical Equipment — Insulating rings, spacers and supports
- Industrial Equipment — High-temperature and wear-exposed insulation components
Product Geometry & Configuration
Alumina Typical Material Properties
| Property | 95% Al₂O₃ | 99% Al₂O₃ | 99.5% Al₂O₃ | 99.8% Al₂O₃ | Condition / basis |
|---|---|---|---|---|---|
| Density (g/cm³) | 3.65 | 3.85 | 3.90 | 3.92 | — |
| Fracture toughness (MPa·m½) | 3–4 | 3–4 | 4 | 4 | — |
| Young’s modulus (GPa) | 320 | 340 | 370 | 390 | — |
| Flexural strength (MPa) | 300 | 330 | 375 | 390 | 25°C |
| Compressive strength (MPa) | 2200 | 2350 | 2450 | 2500 | 25°C |
| Thermal conductivity (W/(m·K)) | 18–22 | 27 | 29 | 32 | 25°C |
| Linear thermal expansion coefficient (10⁻⁶/K) | 8 | 8 | 8 | 8 | 25–1000°C |
| Dielectric strength (kV/mm) | 16 | 20 | 22 | 22 | — |
| Volume resistivity (Ω·cm) | 10¹⁴ | 10¹⁴ | 10¹⁴ | 10¹⁴ | 25°C |
| Relative permittivity | 9 | 9.7 | 9.7 | 9.8 | 1MHz, 25°C |
| Dielectric loss | 0.0004 | 0.0002 | 0.0002 | 0.0001 | 1MHz, 25°C |
| Vickers hardness (HV) | >1300 | 1700 | 1750 | 1800 | — |
| Material thermal-shock temperature difference, ΔT (°C) | 220 | 180–200 | 180–200 | 180–200 | — |
| Typical maximum material temperature (°C) | 1500 | 1650 | 1700 | 1700 | — |
Product Geometry & Configuration
| Product parameter | Configuration | Basis |
|---|---|---|
| Material system | Alumina | Material family; grade selected for the application |
| Component forms | Insulating rings and washers; Bushings and spacers; Custom profiled insulator bodies | Drawing-defined configurations |
| Geometry and dimensions | Custom by drawing | Part drawing and mating interfaces |
| Functional surfaces | Contact, locating, joining or insulating surfaces as applicable | Surface finish and acceptance criteria on the drawing |
Available Forms
Representative forms are shown for selection; final geometry follows the approved drawing.
- Insulating rings and washers
- Bushings and spacers
- Custom profiled insulator bodies
Packaging & Shipping
Packing and shipment arrangements are selected for the confirmed component geometry and surface requirements.
| Item | Details |
|---|---|
| Product protection | Protection method is selected for component geometry, surface condition and quantity. |
| Other commercial terms | Confirmed in quotation |
| Payment terms | T/T / Western Union / PayPal; 50% advance payment, 50% balance before shipment |
| Shipping methods | Sea freight / Air freight / Door-to-door courier |
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