Extrusion Materials
Luminex™ - Magnesium Oxide (Magnesia)
MTC Stourport's’ Luminex™ Magnesia is renowned throughout the industry for its quality and consistency. Extruded Magnesia (MgO) is used primarily in heat engineering applications such as cartridge heaters and thermocouples, due to its unique properties having both excellent thermal conductivity and electrical insulation at temperatures of up to 1200°C.
In most applications the extruded Magnesia is slipped around heater cables and sheathed in metal tubes before being crushed to its ultimate size within the cable. In this state, the cable is able to be wound or bent into shape without loss of the ceramic’s insulation or conductivity properties.
Typical applications
- Sheath and high wattage cartridge heaters
- Metering instrumentation
- High temperature cabling
- Thermocouples
MTC Stourport offers three grades of Luminex™ tailored to meet the needs of a range of applications:
Luminex™ 970
A minimum 96% pure Magnesium Oxide (typically 97%) used for a variety of electrical insulation qualifications in domestic and industrial environments.
Luminex™ 990
A 99% pure Magnesium Oxide for use in applications in which electrical properties need to be maintained at high temperatures, in particular high electrical resistance can be maintained up to 1100°C.
Luminex™ 993
An ultra pure Magnesium Oxide with a minimum purity of 99.3%, low water absorption properties, high volume resistance and minimal sulphur content, this grade is well suited to applications such as micro cartridge heaters and thermocouples.
