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FAR and UL-Rated Ultra-High Impact Sheet

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Design Options

Wide Range Available
True Pearl, Metallic
Impress Printing®
500 lb

Compared to other FAR 25.853(a) rated thermoplastic alloy sheet products, Boltaron® 4330 offers an exceptionally high Izod impact strength of 18 ft-lb/in. (953 J/m) for longer service life in aircraft interior components.

This proprietary extruded thermoplastic alloy sheet also expands design freedom with a full range of colors and the widest range of textures in thermoplastic alloy materials.

Boltaron’s unique custom production capabilities also include the ability to manufacture cost-effective low minimums with fast turnaround. Boltaron® 4330 also features consistently uniform surface quality, and maintains its wall thickness during thermoforming even in deep draws and sharp corners.

Overall, it offers an unequalled combination of performance and design freedom makes it ideal for applications from aircraft interiors to electrical enclosures, especially in damage-prone environments.

(Note: For aircraft parts larger than 1 sq ft (305 sq mm) requiring an OSU 65/65 rating, please specify Boltaron® 9815N sheet).


  • FAR 25.853 (a) compliant
  • Impact resistance 18 ft-lb/in (953 J/m)
  • Uniform high quality appearance
  • Maintains wall thickness in deep draw forming
  • Lot-to-lot color consistency
  • Custom colors and textures at low minimums


  • Aircraft interior components
  • Electrical applications
  • Equipment enclosures, housings
  • Medical and analytical equipment
  • Insulating panels

Aircraft Interior Uses

  • Instrument panel housings
  • Class dividers, bulkhead laminates
  • Galley and lavatory components
  • Bull noses, gap covers, moldings
  • Sidewall and kick panels
  • Window reveals
  • Seat parts, backs, tray tables
  • Instrument panel
  • Passenger Service Units (PSU s)
  • Light housings, air ducts
  • Life vest shrouds
  • Video monitor shrouds

Performance Details

FAR Ratings

  • FAR 25.853(a)(i) (Flammability) (Vertical burn, 60 sec) Pass
  • FAR 25.853(a)(ii) (Flammability) (Vertical burn, 12 sec) Pass


  • Name Test Method Imperial Metric
  • Specific Gravity ASTM D792 1.415
  • Tensile Strength ASTM D638 5,400 psi 41 MPa
  • Flexural Strength ASTM D790 9,200 psi 63 MPa
  • Flexural Modulus ASTM D790 330,000 psi 2,275 MPa
  • Izod Impact Notched ASTM D256 18 ft-lb/in @73 °F 953 J/m @ 23 °C
  • Hardness Rockwell ASTM D785 110
  • Heat Deflection Annealed ASTM D648 161°F @ 264 psi 72 °C @1.82 MPa
  • FLAMMABILITY UL 94 V-0(1&2), 5VB(1), 5VA(2) (1)Value based on a minimum thickness of .047 in (1.2 mm), UL File #E54688 (2)Value based on a minimum thickness of .055 in (1.4 mm), UL File #E54688
  • Radiant Panel Flame Spread Index (0.125 in./3.18 mm gauge) ASTM <10
  • Mold Shrinkage 0.5-0.7%
  • Forming Temperature 335-370 °F 168-188 °C
  • Typical Heater Settings (Top) 30-50%
  • Typical Heater Settings (Bottom) 50-70%
  • Pre-Drying Not required

* Independent lab tests. All tests at 73 °F (23 °C) in dry conditions unless otherwise noted.

Sheet Sizes

  • Name Imperial Metric
  • Lengths to 120 in 3,048 mm
  • Widths to 60 in 1,524 mm
  • Gauges from 0.028 to 0.25 in from 0.7 to 6.35 mm
  • Custom Sizes Blank sizes, gauges on request

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