Al₂O₃
Alumina Ceramics
High-purity alumina for insulation, high-temperature containment and structural duty where strength and electrical isolation have to hold at the same time.
Material detailsFORM 07
Ceramic Insulators
Insulating bodies, spacers and supports for equipment that runs hot and live at the same time.
Insulation gets difficult when it is hot. Most insulating materials that are easy to work at room temperature either conduct, creep or decompose once the equipment is running, which is where technical ceramics earn their place.
The geometry matters as much as the material: creepage distance is a shape decision. We ask for the voltage class and the mounting arrangement, and work the body shape around them.
Specification and control points
| Material system | Alumina · Silicon nitride |
|---|---|
| Form | Bushings · Spacers · Discs · Shaped bodies · Terminal blocks |
| Envelope | To drawing |
| Wall thickness | To drawing, set by the creepage path |
| Voltage class | Stated by the customer; geometry worked to it |
| Mounting | Holes, slots, steps or threads as drawn |
| Assembly | Fitted, clamped or bonded as required |
FORM 07Ceramic Insulators
Typical applications
Applications this form is specified for
The industries below are the applications this material system is most often specified for. Tell us your own duty and we will confirm whether it is the right grade.
Heater and element supportsBusbar and terminal insulationThermocouple assembliesHigh-voltage and power equipmentFurnace internals
Made to your requirement
What is defined with you before production
- Voltage class and the creepage requirement
- Operating temperature and whether it cycles
- The mounting arrangement and the load carried
- Any fitting that is bonded or clamped to the ceramic
Supply stage
Sample part first, then batch production on the same material and process basis. Ask for the material data sheet with your quotation.
Related pages
Forms and materials to compare
Si₃N₄
Silicon Nitride Ceramics
Silicon nitride for strength at temperature: high strength, thermal shock resistance and low weight in parts that move or cycle.
Material detailsFORM 01
Ceramic Tubes
Straight and stepped tubes for high-temperature process lines, sensor protection and electrical isolation.
Material details