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Product description

BT250E-1 resin system is a 121°C (250°F) cure epoxy prepreg system with excellent toughness and strength. It provides an outstanding surface finish under vacuum-bag/oven-cure only. The resin system, which is self-adhesive to honeycomb and foam core, is MIL-R-9300 qualified and makes a great choice for many applications in the low-to-medium-service temperature range.

Product benefits/features

  • MIL-R-9300 qualified
  • BT250E-1FR is the flame retardant version

Market segments

  • Energy
  • Aerostructures
  • Radome
  • Industrial


Product category Thermoset Prepreg
Processing Out of Autoclave / Vacuum bag
Press forming
Resin type Epoxy
Tg (Dry, onset) 125 °C / 257 °F
Cure temperature (Optimal) 121 °C / 249 °F
Cure temperature (Lowest)121 °C / 249 °F
Cure temperature (Highest)121 °C / 249 °F
Out life 30 days

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