Gillfab® 4523

Gillfab® 4523 image


Gillfab® 4523 is a high-strength sandwich panel composed of woven cloth and unidirectional fiberglass reinforced phenolic skins bonded to a Gillcore® HD meta-aramid honeycomb. Advanced design offers exceptional mechanical properties in accordance with Airbus BCC3 requirements.


Floor panels for bulk cargo compartments in Airbus A318/A319/A320/A321/A330/A340/A300/A310/A300-600.


  • Unbalanced facing construction provides exceptional durability needed on the panel surface without the added weight and cost of a symmetrical design
  • Superior impact strength and abrasion resistance
  • Corrosion resistant
  • Low smoke and toxicity emission
  • Self-extinguishing and resistant to flame penetration in accordance with FAR Part 25 Appendix F
  • Service temperature: to 180°F (82°C)


Thickness, inch (mm)0.496 (12.6)
Length, inch (mm)Maximum of 144 (3,658)
Width, inch (mm)Maximum of 60 (1,524)


Adhesive: Epoxy film

Core: Gillcore® HD meta-aramid honeycomb

Reinforcement: Unidirectional S2-glass fiber and woven fiberglass cloth

Resin System: Phenolic

Facing: Top: 0.060 inch (1.524 mm); Bottom: 0.025 inch (0.635 mm)


  • Qualified to AI Technical Specification No. 5360 M1M 000500, Issue 6 (BCC3)
  • FAR 25.853 – fire resistance
  • ABD 0031 – Smoke density, toxicity, flammability, and burn through

Performance Properties, Typical

The following tests are run in accordance with 5360 M1M0005006 TY BCC3 (Airbus) specification test methods.

TGC Part Number4523
Weight, psf (kg/m2)1.19 (5.81)
Thickness, in (mm)0.50 (12.6)
Warpage, in/ft (mm/m)0 (0)
Impact strength, ft-lbs (N-m)21.0 (28.5)
L.B. flexural, ultimate x/-ks, lbs (N)966 (4297)
Deflection at 100 lbs (445N), in (mm)0.23 (5.8)
Drum peel, lbs/3″ width (N/76-mm width)96.8 (431)
Flammability (60 seconds vertical)Self-extinguishing time, seconds4
Burn length, in (mm)0.890 (22.6)
Drip extinguish time, seconds0
Smoke densityUpper side, DM60
Lower side, DM43

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