Poly­car­bon­ate [Makrolon®, Lexan®, Tuffak®, Zelux®]


  • Poly­car­bon­ate resin thermoplastic
  • Out­stand­ing mechan­i­cal, opti­cal, elec­tri­cal and ther­mal properties
  • Envi­ron­men­tally conforming
  • Flame-retardant
  • Scratch– and heat-resistant
  • Weather­abil­ity, bio­com­pat­i­bil­ity and opti­cal quality
  • Com­pli­ant with FDA, FAR and USP requirements

Com­mon uses

  • Build­ing (glaz­ing and domes)
  • Indus­try (machine pro­tec­tion and fab­ri­cated parts)
  • Com­mu­ni­ca­tion and signage
  • Space and sports helmets
  • Clear high-performance wind­shields and air­craft canopies
  • Bul­let­proof windows


Mate­r­ial Specifications

ASTM or UL test Prop­erty Value
D792 Den­sity (g/cm3) 1.2
D570 Water absorp­tion, 24 hrs (%) 10
D638 Ten­sile strength (psi) 9,000
D638 Ten­sile elon­ga­tion at break (%) 130
D638 Ten­sile mod­u­lus (psi) 3.1 x 105
D790 Flex­ural strength (psi) 14,200
D790 Flex­ural mod­u­lus (psi) 3.4 x 105
D785 Hard­ness, Rockwell 118
D256 Izod notched impact (ft-lb/in) 17
D3418 Melt­ing temp (F°) 310
D696 Coef­fi­cient of lin­ear ther­mal
expan­sion (x 10–5 in./in./°F)
D648 Heat deflec­tion temp (F°) at 264 psi 270
- Max oper­at­ing temp (F°/C°) 240
C177 Ther­mal con­duc­tiv­ity
UL94 Flam­ma­bil­ity rating V-2
D150 Dielec­tric con­stant at 60 Hz 3.2
D150 Dis­si­pa­tion fac­tor at 60 Hz 0.001
D149 Dielec­tric strength (V/mil)
short time, ⅛” thick
D257 Vol­ume resis­tiv­ity (ohm/cm) at 50% RH 1017

These are typ­i­cal val­ues for ref­er­ence and com­par­i­son only. They should not be used as a basis for design spec­i­fi­ca­tions or qual­ity con­trol. Con­tact us for the man­u­fac­tur­ers’ com­plete mate­r­ial prop­erty datasheets. All val­ues were taken at 73°F (23°C) unless oth­er­wise noted.

Don’t see what you’re look­ing for? Call us at 800–423-2769 or email us at tom@crownplasticsinc.com.