DIABON® graphite

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SGL Carbon is the global market leader for graphite based process equipment, systems and parts. DIABON is our tradename for impervious graphite materials used for engineered solutions in corrosive applications. Based on application know-how of the largest equipment reference base on market and more than 70 years of design and manufacturing expertise, DIABON materials are continuously improved and globally considered as quality benchmark for corrosive applications. DIABON phenolic resin impregnated graphite is certified by FDA. DIABON is a composite material made of:

  • a porous graphite base material
  • impregnated with a phenolic resin or a fluoropolymer to make it impervious.

  • Customer benefits:

  • Long lifetime and safety
  • High plant availability
  • Compactness

  • Material upgrade options:

  • CARBOGUARD®: A carbon fiber reinforcement of graphite and silicon carbide parts e.g. tubes, tubesheets, headers, columns etc.. An increase of operational reliability and safety are the benefits. It extends the range of application under high-stress conditions like temperature or pressure shocks.
  • Resin-layer-free design: Tubes can be manufactured without a resin layer on the inside. This design is beneficial for very clean requirements or for falling film applications.
  • This material data has been provided by SGL Carbon.

    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




    Bulk density

    1.85 g/cm³

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    Compressive strength

    40 MPa

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    Flexural strength

    20 MPa

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    Tensile strength

    14.0 MPa

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    Thermal conductivity

    140 W/(m·K)

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    Technological properties

    Application areas

    Depending on the impregnation resin and shape: Different equipments and parts, Plate heat exchanger, Block heat exchangers, Shell and tube heat exchangers