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Ensinger PEI
3A Composites Core Materials AIREX® C70.75 Universal Structural Foam
Categories: Other Engineering Material; Composite Core Material; Polymer

Material Notes: AIREX® C70 is a closed cell, crosslinked polymer foam that combines excellent stiffness and strength to weight ratios with superior toughness. It is non-friable, contains no CFC’s, has negligible water absorption, and provides an excellent resistance to chemicals. A fine cell structure offers an excellent bonding surface. Compatible with most resins and manufacturing processes AIREX® C70 is ideally suited as a core material for a wide variety of lightweight sandwich structures subjected to both static and dynamic loads.


  • outstanding strength and stiffness to weight ratios
  • Good impact strength
  • Low resin absorption
  • High fatigue resistance
  • Good fire performance (self-extinguishing)
  • Sound and thermal insulation
  • Good styrene resistance
  • Marine: Hulls, decks, bulkheads, superstructures, interiors
  • Road and Rail: Roof panels, interiors, floors, doors, partition walls, side skirts, front-ends
  • Aircraft: Interiors, radomes, galley carts, general aviation (fuselage and wing)
  • Recreation: Skis, snowboards, surfboards, wakeboards, canoes, kayaks
  • Industrial: Tooling, tanks, ductwork, containers, covers
  • Vendors:
    Available Properties
    • Density, ISO 845, average
    • Density, ISO 845, typical range
    • Tensile Strength, ISO 527 1-2, in the plane
    • Tensile Strength, ISO 527 1-2, average; in the plane
    • Elongation at Break, ISO 1922, shear
    • Elongation at Break, ISO 1922, average; shear
    • Tensile Modulus, ISO 527 1-2, in the plane
    • Tensile Modulus, ISO 527 1-2, average; in the plane
    • Compressive Strength, ISO 844, perpendicular to plane
    • Compressive Strength, ISO 844, average; perpendicular to plane
    • Compressive Modulus, DIN 53421, perpendicular to plane
    • Compressive Modulus, DIN 53421, average; perpendicular to plane
    • Shear Modulus, ASTM C393
    • Shear Modulus, ASTM C393, average
    • Shear Strength, ISO 1922
    • Shear Strength, ISO 1922, average
    • Thermal Conductivity, ISO 8301
    Property Data

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