Gillfloor® 4709

Gillfloor 4709 image


Gillfloor® 4709 is a light-weight, high strength flooring panel made from unidirectional carbon fiber reinforced epoxy facings bonded to meta-aramid honeycomb core. Outer panel surfaces feature fiberglass overlay to help protect against galvanic corrosion.


Light-weight, high-strength panels designed for use as flooring in passenger compartments of commercial aircraft where weight, durability and strength are a major consideration.


  • Good impact strength
  • Carbon facings achieve 10-12% weight savings as compared tounidirectional glass reinforced material
  • Excellent machinability and bonding surfaces
  • Resistant to galvanic corrosion
  • Good strength-to-weight and stiffness-to-weight ratios
  • Light weight and low panel deflection under load


Thickness, inch (mm)0.40 (10.16)
Length, inch (mm)Typical 144 (3,658)
Width, inch (mm)Typical 48 (1,219)


Adhesive: Epoxy film

Core: Gillcore® HD meta-aramid honeycomb

Reinforcement: Unidirectional carbon fiber with fiberglass overlay

Resin System: Epoxy

Facing: Top: 0.010 inch (0.25 mm); Bottom: 0.010 inch (0.25 mm)


  • Qualified to Boeing BMS 4-20, Types II, III, and V
  • FAR 25.853 – fire resistant

Performance Properties, Typical

The following tests are run in accordance with BMS 4-20 (Boeing) specification test methods.

TGC Part Number4709 Type II4709 Type III & V
Areal weight, psf (kg/m2)0.56 (2.73)0.45 (2.20)
Thickness, in (mm)0.40 (10.2)0.40 (10.2)
Long beam flexure, load, lbs (N)390 (1735)362 (1610)
Deflection at 100 lbs (445N) load, in (mm)0.40 (10.2)0.41 (10.4)
Long beam load, humidity exposed, lbs (N)325 (1446)304 (1352)
Panel shear, lbs (N)1357 (6036)913 (4061)
Drum peel, in-lbs/3″ width (N/76-mm width)33 (294)37 (329)
In-plane shear, lbs/in (kN/m)411 (72.0)402 (70.4)
Insert shear, lbs (N)1769 (7869)1723 (7664)
Impact strength, in-lbs (N-m)18 (2.0)21 (2.4)
Stabilized core compression, lbs/sq in (kg/cm2)2547 (179.1)976 (68.6)
Warpage, in/ft (mm/m)0.002 (0.167)0.001 (0.083)
Food cart roller test, cycles without failure>120,000>80,000
Flammability – 60 seconds verticalSelf-extinguishing time, seconds3.44.5
Burn length, in (mm)1.8 (45.72)1.9 (48.26)
Drip extinguish time, seconds00
Flammability – 45 degree angleSelf-extinguishing time, seconds00
PenetrationNo PenetrationNo Penetration
Glow time, seconds00
Specific optical density, Ds after 4 mins, max168151
Toxic gas emission, PPM, maxCO233200

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

Join Our Team

Take your career to the next level and push the limits of possibility.

The Gill Corporation provides the products that solve your challenges.