POLYCARBONATE (UNFILLED)

POLYCARBONATE (UNFILLED)

Material Information

Unfilled polycarbonate is a high-molecular weight amorphous engineering thermoplastic. This tough and transparent material is unmatched in clarity and ability to withstand high impact over a wide range of temperatures. It has a high heat deflection temperature and modulus of elasticity, absorbs very little moisture, and has good low frequency and high voltage insulating properties. This makes it ideal for use in electrical and electronic components. The unfilled grades transparency also makes it a superior option for transparent structural applications. Polycarbonate can be screened, vacuum formed, die cut, and easily fabricated. It is available in the form of sheet, rod, film, and tubing.

Application

  • Electrical components
  • Brush holders
  • Coil bobbins & forms
  • Insulators
  • Relay components
  • Dialysis equipment parts
  • Medical tubing
  • Gamma sterilizable reusables
  • Instrument covers
  • Handles
  • Rollers
  • Machine guards
  • Fittings

Properties

  • High impact strength
  • Unmatched clarity
  • High heat deflection temperature
  • High modulus of elasticity
  • Very low moisture absorption
  • Excellent thermal stability
  • High tensile, shear, and flexural strength
  • Low deformation under load
  • Excellent creep and cold flow resistance
  • Low coefficient of thermal expansion
  • Good electrical insulation properties
  • Easy to fabricate and machine

Physical

Astm Test Method

Polycarbonate (Unfilled)

Density (lb/in^3) D792 0.043
Specific Gravity D792 1.2
Water Absorption @ 24 hours (%) D570 0.12

Mechanical

Tensile Strength (PSI) D638 9,500
Tensile Modulus (PSI) D638 320,000
Tensile Elongation at Break (%) D638 60
Flexural Strength (PSI) D790 15,000
Flexural Modulus (PSI) D790 375,000
Compressive Strength (PSI) D695 12,000
Compressive Modulus (PSI) D695 240,000
Izod Impact (Notched), ft-lb/in D256 13
Rockwell Hardness D785 M70, R118

Thermal

Coefficient of Thermal Expansion,
10^-5/°F
D696 3.9
Heat Deflection Temperature 264 psi, ºF D648 270
Glass Transition Temp (°F) D3418 293
Continous Service Temp (Operating), °F  - 250
Thermal Conductivity, BTU-in/hr-ft² °F C177 1.3
Flammability Rating, less than .45″
(11.5mm) thickness
UL94 HB
Flammability Rating, above .45″
(11.5mm) thickness
UL94 VO

Electrical

Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 390
Volume Resistivity (ohm-cm) @ 50% RH D257 10^16
Dielectric Constant at 60Hz D150 3.17
Dissipation Factor at 60 Hz D150 0.0009

NOTE:

The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets. All values at 73°F (23°C) unless otherwise noted.