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Ensinger PEI
3A Composites Core Materials AIREX® C51.60 Industrial Processing Foam
Categories: Other Engineering Material; Composite Core Material; Polymer

Material Notes: AIREX® C51 is a closed-cell polymer foam with outstanding damage tolerance and formability. Its excellent price / performance ratio uniquely qualifies this core material for high-volume sandwich production. The foam has a high elongation at break and shows good impact properties. It can be formed at room temperature to simple shapes as well as thermoformed to complex three-dimensional parts. The perforation of AIREX® C51’s surface ensures a good adhesion to the laminate. The elevated temperature resistance allows short processing cycles with fast curing resin systems, including thermoplastic fiber reinforced skins (GMT) making it very suitable for mass-produced lightweight sandwich structures subjected to both static and dynamic loads.


  • High impact resistance (non-brittle failure mode)
  • Elevated short-period temperature resistance
  • Cold and hot formable to 3-dimensional contours
  • Good fatigue resistance
  • Superior bond strength
  • Low resin absorption
  • Good sound and thermal insulation
  • Road and Rail: Car bodies, headliners, deflectors, spoilers, seats, truck panels, side skirts, covers
  • Wind Energy: Turbine generator housings
  • Industrial: Containers, shelters, covers
Available Properties
  • Density, ISO 845, apparent nominal
  • Tensile Strength, ISO 527 1-2, in the plane
  • Elongation at Break, ISO 1922, shear
  • Tensile Modulus, ISO 527 1-2, in the plane
  • Compressive Strength, ISO 844, perpendicular to plane
  • Compressive Modulus, DIN 53421, perpendicular to plane
  • Shear Modulus, ASTM C393
  • Shear Strength, ISO 1922
  • Thermal Conductivity, ISO 8301
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