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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

Specifications

PhysicalAstm Test MethodPolycarbonate (Unfilled)
Density (lb/in^3)D7920.043
Specific GravityD7921.2
Water Absorption @ 24 hours (%)D5700.12
Mechanical
Tensile Strength (PSI)D6389,500
Tensile Modulus (PSI)D638320,000
Tensile Elongation at Break (%)D63860
Flexural Strength (PSI)D79015,000
Flexural Modulus (PSI)D790375,000
Compressive Strength (PSI)D69512,000
Compressive Modulus (PSI)D695240,000
Izod Impact (Notched), ft-lb/inD25613
Rockwell HardnessD785M70, R118
Thermal
Coefficient of Thermal Expansion,
10^-5/°F
D6963.9
Heat Deflection Temperature 264 psi, ºFD648270
Glass Transition Temp (°F)D3418293
Continous Service Temp (Operating), °F250
Thermal Conductivity, BTU-in/hr-ft² °FC1771.3
Flammability Rating, less than .45″
(11.5mm) thickness
UL94HB
Flammability Rating, above .45″
(11.5mm) thickness
UL94VO
Electrical
Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149390
Volume Resistivity (ohm-cm) @ 50% RHD25710^16
Dielectric Constant at 60HzD1503.17
Dissipation Factor at 60 HzD1500.0009

Disclosure: 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.

 

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