CYCOM® 5250-4 RTM is a true one-part homogeneous BMI resin developed specifically for the resin transfer molding (RTM) process. It reaches very low viscosity during transfer and maintains a low viscosity for several hours, providing the maximum capability to fabricate complex parts. Laminates fabricated from CYCOM 5250-4 RTM are capable of service temperatures up to 400°F (204°C), but its toughness and processability make it an ideal material for 180°F (82°C) temperature applications where epoxies are commonly used. | CYCOM 5250-4 RTM offers the highest open hole compression (OHC) value of any organic matrix resin while providing the highest level of toughness available in an RTM capable matrix resin. Type: resin | Temp: 320F < service temp > 500F | Process: out of autoclave | CAI KSI: medium | OHC Wet: high | TG Wet: 405 (207) | Proc Temp: 375 (191) cure, 440 (227) post-cure


  • Global Business Unit
    Composite Materials
  • Brand


Segments Applications
Airframe Secondary structural materials | Primary structural materials

Chemical categories

Chemical category Chemical family Chemical product
Composites Thermoset BMI

Region of commercial availability

  • Europe / Middle East / Africa
  • North America

Download documentation for CYCOM 5250-4 RTM