Rubalit® C799

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Description

Rubalit is a highly dense technical oxide ceramic material that can be determined by characteristics of hardness and high strength in combination with that of temperature stability. High corrosion against and wear resistance defines the material for excellent usage in various chemical applications. Key characteristics:

  • In accordance to standards DIN VDE 0335
  • Suitable for temperatures of less than 1700°C
  • Very high temperature stability and chemical resistance
  • Recommended for extreme corrosive environments
  • High mechanical strength
  • High electrical resistivity

  • Related Standards

    This material data has been provided by CeramTec.

    "Typical" values were obtained via a literature search. "Predicted" values were imputed via artificial intelligence technology. While we have placed significant efforts in ensuring data accuracy, "typical" and "predicted" data should be considered indicative and verified by appropriate material testing. Please do contact us if additional information on the the predicted data method is required.
    All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
    Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.

    Ashby charts

    Properties

    General

    PropertyValue

    Relative density

    3.85 [-]

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    Mechanical

    PropertyValueTesting Standard

    Flexural strength

    360 MPa

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    ASTM F417

    Hardness, Rockwell Superficial 45-N

    80 [-]

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    ASTM E18

    Thermal

    PropertyValueTesting StandardComment

    Coefficient of thermal expansion

    5.4e-06 1/K

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    20-100°C

    6.5e-06 1/K

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    20-300°C

    7.7e-06 1/K

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    20-600°C

    8.5e-06 1/K

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    20-1000°C

    Max service temperature

    1700 °C

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    Thermal conductivity

    28 W/(m·K)

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    ASTM C408

    Electrical

    PropertyTemperatureValueTesting StandardComment

    Dielectric constant

    10 [-]

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    ASTM D150

    Dielectric strength

    10 kV/mm

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    ASTM D116

    min.

    Dissipation factor

    0.0002 [-]

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    ASTM D150

    Electrical resistivity

    200 °C

    1e+13 Ω·m

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    ASTM D257

    400 °C

    1e+10 Ω·m

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    ASTM D257

    600 °C

    1e+09 Ω·m

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    ASTM D257

    Technological properties

    Property
    Application areas

    Protection and Insulating Tubes

    Protection and insulating tubes made from technical ceramics are the first choice in temperature and measurement control situations, whenever safety and stability aspects are required.

    Ceramic protection tubes and insulating tubes from CeramTec are used in manufacturing devices for temperature measurement and control. Their resistance against aggressive atmospheres even in the most demanding conditions, where temperatures reach up to 1,700°C make CeramTec products the first choice.

    The various CeramTec alumina ceramics used, such as Rubalit® C799 or Dimulit® C610, are characterized by their excellent electrical insulation and high mechanical strength. CeramTec also offers a slightly porous material Pormulit® C530. CeramTec protection and insulating tubes are manufactured in accordance to DIN 40680 standards.

    Chemical composition

    Al₂O₃: > 99.7%

    SiO₂: 0.05%

    Fe₂O₃: 0.06%

    MgO: 0.15%

    CaO: 0.025%

    Color

    Off white.