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Epoxy Resin ТO200

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ТО200 is a two-part epoxy resin with unique characteristics, combining high heat resistance, strength and processability. The impregnation temperature is 20-25°C. Flexible curing mode in combination with post-curing allows achieving the required heat resistance at the minimum curing temperature. It shows the following features and properties:

  • Wide processing window >2 hours at 25°C
  • Curing at room temperature
  • Tracking of infusion process under UV light
  • Low exotherm
  • High mechanical properties
  • For tooling up to 200°C
  • Ashby charts

    See where Epoxy Resin ТO200 falls on the material property chart for Density against Elastic modulus in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.





    1.15 g/cm³ at 20 °C

    ASTM D792


    Elastic modulus


    3.26 GPa at 20 °C

    Show Epoxy Resin (EP) materials with Elastic modulus of 3.26 GPa at 20 °C

    ASTM D638

    Flexural strength


    94 MPa at 20 °C

    Show Epoxy Resin (EP) materials with Flexural strength of 94 MPa at 20 °C

    ASTM D790

    Plane-Strain Fracture Toughnes


    0.64 MPa·√m at 20 °C

    Show Epoxy Resin (EP) materials with Plane-Strain Fracture Toughnes of 0.64 MPa·√m at 20 °C

    ASTM D5045

    Strain energy release GIC

    ASTM D5045

    Tensile strength


    60 MPa at 20 °C

    Show Epoxy Resin (EP) materials with Tensile strength of 60 MPa at 20 °C

    ASTM D638


    Coefficient of thermal expansion


    8.7E-5 1/K at 20 °C

    ASTM E831

    Glass transition temperature


    211 °C

    ASTM E2092

    Impregnation temperature


    20 - 25 °C

    Max service temperature


    120 - 180 °C

    for manufacturing CFRP and GFRP or for composite tooling respectively.

    Technological properties

    Application areas

    The resin can be used for manufacturing CFRP or GFRP with sustainable properties up to 120°C, or for composite tooling with service temperatures up to 180°C.

    Processing methods

    Thoroughly mix components A and B at 25°C in a 1:0.4388 weight ratio. It is recommended to use device with automatic mixing and mix under vacuum. Degas the resin with intensive mixing for 15-30 minutes at 20-25°С, pressure no more than 10 mbar. Assemble vacuum bag. Perform a leak test, the rate of the vacuum loss should not be more than 1 mbar per minute. The residual pressure in the bag must not be more than 10 mbar. Assemble the second vacuum bag. Carry out a leak test of the second vacuum bag with same conditions. The recommended impregnation temperature is 25°C. It is recommended to preliminarily dry the reinforcing material in a vacuum bag at 60-80°C for at least 1 h or 6 h at 25°C. Maintaining the temperature of the mold at 20-30°C, start the infusion process. After complete impregnation, close the resin inputs, continue evacuation from inner bag for at least 30 minutes at 25-40°C. Close the outputs from the inner bag. Continue evacuation from outer vacuum bag until gelation (~24 h at 25°C). After 48-72 hours, you can remove the part from the mold and post-cure. Post-cure: Increase the temperature at a rate of 5°C/h to 80°C then at rate 10-15°C/h to 180°C, dwell for 1 hour (or with step mode same as in picture). Highest mechanical properties of CFRP are achieved at a temperature of 80-120°C. When cured at higher temperatures, a higher heat resistance is achieved with a slight fall in the mechanical characteristics of the CFRP.

    This material data has been provided by Matmatch.

    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.