FM® 6604-1 is a modified bismaleimide (BMI) resin core splice foaming adhesive. It has a cure temperature of 350°F (177°C) with a post cure at 440°F (227°C). The service temperature is -67°F to 450°F (-55°C to 232°C) with post-cure.

Typical applications for FM® 6604-1 include core shear-ties, edge closeouts, and insert bonding.

Features and Benefits 
  • Maximum continuous service temperature up to 450⁰F (232⁰C) with post cure. 
  • Expansion ratio 2:1 nominal. 
  • Ideal for non-metallic core splice edge close out 
  • Long-term aging 
  • High strength-to-density ratio 
  • Structural equivalency to unspliced core 
  • Fuel tight


  • Global Business Unit
    Composite Materials
  • Brand
  • Synonyms
    fm6604-1; fm 6604 - 1


Segments Applications
Airframe Secondary structural materials | Primary structural materials

Chemical categories

Chemical category Chemical family Chemical product
Composites Thermoset BMI

Region of commercial availability

  • Asia / Pacific
  • Europe / Middle East / Africa
  • North America
  • Latin America

Download documentation for FM 6604-1