Gillfab® 4009


Gillfab® 4009 is a light weight, high strength sandwich panel made with uni-directional carbon fiber reinforced epoxy facings bonded to Gillcore® HD meta-aramid honeycomb.



The panel is designed for use as medium duty structural panels in aircraft, where light weight and rigidity are primary considerations, such as underseats, galleys, flooring, and bulkheads.


  • Light weight and high rigidity
  • Glass fiber overlay can be added to prevent galvanic corrosion
  • Service temperature up to 160°F (71°C)


Thickness, inch (mm)0.400 (10)
Length and Width, inch (mm)Typical 48 x 120 (1,219 x 3,048)
Maximum 65 x 144 (1,651 x 3,658)
Facing thickness, face/back, inch, (mm)Typical 0.010/0.010 (0.254/0.254), also available in 0.015/0.015 (0.381/0.381), 0.020/0.020 (0.508/0.508) and 0.035/0.035 (0.890/0.890)


Adhesive: Epoxy

Core: Meta-aramid

Facings Reinforcement: Unidirectional carbon fiber

Facings Resin System: Epoxy


  • Qualified to Embraer specification MEP 15-030
  • FAR 25.853 and 25.855: Fire resistance

Performance Properties, Typical

The following tests are run in accordance with Embraer MEP 15-030, based on based on Gillfab® 4009 with 0.010″/0.010″(0.254 mm/0.254 mm) facings.

TGC Part Number4009-400
Weight, psf (kg/m2)0.39 (1.90)
Climbing Drum Peel, Face/Bottom, in-lbs/3″ width (N/76mm width)41/41 (182/182)
Long Beam Flexure Strength, L-direction, lbf (N)
Deflection @ 100 lbs, inch (@445N, mm)
Facing stress, ksi (Mpa)
282 (1,253)
0.412 (10.5)
59 (410)
Long Beam Flexure Strength, W-direction, lbf (N)
Deflection @ 100 lbs, inch (@445N, mm)
Facing stress, ksi (Mpa)
272 (1,212)
0.398 (10.1)
58 (399)
Short Beam flexure Strength, L-direction, lbf (N)
Core Shear Stress, psi (Mpa)
580 (2,581)
245 (1.69)
Short Beam flexure Strength, W-direction, lbf (N)
Core Shear Stress, psi (Mpa)
325 (1,443)
138 (0.95)
Flatwise Compression, psi (Mpa)625 (4.31)
FlammabilityMeet requirements of FAR 25.853
Appendix F Part I

Figures shown reflect typical values and should not be used as design specifications.

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