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Lexan is a good choice for plastic parts that need to be heat and flame resistant

Lexan® (Polycarbonate)

  • Impact and temperature resistance
  • Good dimensional stability
  • Self-extinguishing
  • Exceptional clarity and light transmission
  • Excellent electrical insulation


This polycarbonate has outstanding impact resistance over a wide temperature range as well as fairly good heat resistance.  Lexan® offers an excellent combination of toughness, dimensional stability and heat and flame resistance. Creep resistance is also excellent across a broad temperature range. This material is easily machined and can be cold formed as well. It is available in clear and color. Because of its many advantages, Lexan® is a good choice for many applications.


  • Electrical appliances
  • Medical equipment components
  • Outdoor signs
  • Safety face-shields
  • Storage modules
  • Communications equipment
  • Business machines
  • Aircraft components


Our application engineers can help. With decades of experience in plastic material selection, we'll help you choose the optimal plastic for your application and budget.

To compare
the cost of this material to other thermoplastics, click here.

General Material Properties

Property   Metric units   English units
Density   1.19e3 - 1.2e3 kg/m^3   0.0431 - 0.0434 lb/ft^3
Yield Strength   6.4e7 - 6.6e7 Pa   9.28 - 9.57 ksi
Tensile Strength   6.16e7 - 6.81e7 Pa   8.94 - 9.88 ksi
Elongation   0.524 - 0.981 % strain   52.4 - 98.1 % strain
Hardness (Rockwell M)   80.8 - 89.3 Pa   80.8 - 89.3 HV
Impact Strength (unnotched)   1.9e5 - 2e5 J/m^2   90.4 - 95.2 ft.lbf/in^2
Young's Modulus   2.1e9 - 2.15e9 Pa   0.304 - 0.312 10^6 psi
Insulator or Conductor   Insulator   Insulator
Specific Heat Capability   1.23e3 - 1.28e3 J/kg °C   0.293 - 0.305 BTU/lb. °F
Thermal Expansion Coefficent   6e-5 - 8e-5 strain/°C   33.3 - 44.4 µstrain/°F
CO2 Footprint   4.27 - 4.71 kg/kg   4.27 - 4.71 lb/lb
Recycleable   Yes   Yes

The information on this page is intended as general guidance only and is only accurate at the time of posting (see date below). Specific material properties vary by manufacturer. Please contact a Dielectric application engineer for help in choosing the optimal material for your application and budget.

Posting Date: August 16, 2012