Du-Co Ceramics manufactures magnesium oxide (MgO) ceramic components for applications requiring a unique combination of electrical insulation and thermal conductivity at elevated temperatures. Our electrically fused magnesium oxide materials are available as extruded ceramic cores, dry pressed bushings, and spacers that provide dependable performance in heating elements, temperature sensing devices, and other demanding industrial applications. Magnesium oxide’s ability to transfer heat efficiently while maintaining excellent insulating properties makes it an ideal material for high-temperature electrical applications.
Material Specifications Meeting the Requirements of ASTM: E1652-21 | |||||
|---|---|---|---|---|---|
| Material | Magnesia | ||||
S-464 (MgO Type 2) | S-461 (MgO Type 1P) | ||||
| Chemical Analysis | |||||
| MgO, % | 97.0 min | 99.40 min | |||
| AL2O3, % | 1.00 max | 0.15 max | |||
| SiO2, % | 3.00 max | 0.13 max | |||
| CaO, % | 1.50 max | 0.35 max | |||
| Fe2O3, % | 0.15 max | 0.04 max | |||
| B+Cd, % | 0.0050 max | 0.004 max | |||
| Mechanical Properties | |||||
| Porosity, % | MIN 12 | MIN 14 | |||
| Bulk Density, gm/cc | 2.33 | 2.38 | |||
| Flexural Strength, psi | 2,000-10,000 | 2,000-10,000 | |||
| Compressive Strength, psi | 5,000-15,000 | 2,000-15,000 | |||
| Thermal Properties | |||||
| Thermal Expansion 25°-700° inch/inch/°Cx10-6 | 12.4 | 12.7 | |||
| Note: This information is for design guidance only. Du-Co will not guarantee this information as absolute values. Various geometries can affect properties | |||||
Need a High-Temperature Ceramic Material with Excellent Thermal Conductivity?
Du-Co Ceramics manufactures magnesium oxide ceramic components including extruded cores, bushings, and spacers for demanding heating and temperature sensing applications. Our engineering team can help determine whether MgO is the right material for your project and recommend the best solution for your requirements. Contact us today to discuss your application or request a quote.