Alumina Disc (≥99% Al₂O₃)
S4R alumina discs are made from high-purity alumina ceramic (Al₂O₃ ≥99%) and are designed for laboratory, high-temperature, insulation, and technical applications.
They offer excellent thermal stability, good chemical resistance, high hardness, and reliable electrical insulation. Alumina discs are suitable for use as ceramic supports, insulating discs, spacers, sample holders, furnace components, and protective ceramic plates in demanding laboratory and industrial environments.
Under suitable operating conditions, alumina discs can be used at temperatures up to approximately 1700°C.
Custom dimensions may be available on request depending on project requirements.
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Key Performance Advantages
• High-purity alumina ceramic disc (≥99% Al₂O₃)
• Excellent resistance to high-temperature environments
• Good chemical resistance in suitable laboratory conditions
• Excellent electrical insulation properties
• High hardness and good wear resistance
• Good dimensional stability
• Suitable for ceramic supports, spacers, insulating elements, and sample holders
• Available in multiple diameter and thickness configurations
• Custom dimensions available on request
Thermal Capability
Suitable for:
• High-temperature laboratory applications
• Furnace support and insulation applications
• Sample support and positioning
• Electrical insulation assemblies
• Air, inert gas, and vacuum environments
• Thermal processing and material research setups
Maximum operating temperature: 1700°C.
For best performance and service life, controlled heating and cooling are recommended, especially when operating at high temperature.
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