PPS- TECHTRON® PPS – UNFILLED (POLYPHENYLENE SULFIDE)

PPS- TECHTRON® PPS – UNFILLED (POLYPHENYLENE SULFIDE)

Material Information

PPS (PolyPhenylene Sulfide) is a semi-crystalline engineering thermoplastic. It offers the broadest resistance to chemicals of any advanced engineering plastic. There are no known solvents that effect PPS under 392º F, and it is inert to steam, strong bases, fuels, and acids. It is ideal for precise tolerance machined components because it has minimal water absorption, has a very low coefficient of linear thermal expansion, and is stress relieving manufactured. PPS is also a great option for structural applications, corrosive environments, and a lower temperature replacement for PEEK. At moderate temperatures PPS offers great dimensional stability and strength.

Unlike reinforced grades of PPS, unfilled Techtron® PPS is easily machined to close tolerances. However, it is not recommended for wear applications. It is available in a natural off white color in rod and plate.

 

Application

  • Lantern rings
  • Aerospace applications
  • Pump housings
  • High-pressure liquid chromatography components
  • Water retaining rings
  • Hydrocarbon pump, valve, and compressor components
  • Oil field parts
  • Medical and diagnostic device parts
  • Electronic test sockets and fixtures
  • Flow meter rotors
  • Engine sensors
  • Halogen lamp sockets

Properties

  • Broadest resistance to chemicals of all advanced engineering plastics
  • Easy to machine to close tolerances
  • Great dimensional stability and strength at moderate temperatures
  • Inert to steam, strong bases, fuels, and acids
  • Minimal water absorption
  • Excellent electrical insulator
  • Very low coefficient of linear thermal expansion
  • FDA and USDA compliant
 

Physical

Astm Test Method

Techtron® PPS

Density (lb/in^3) D792 0.049
Specific Gravity D792 1.35
Water Absorption @ 24 hours (%) D570 0.01
 

Mechanical

Tensile Strength (PSI) D638 13,500
Tensile Modulus (PSI) D638 500,000
Tensile Elongation at Break (%) D638 15
Flexural Strength (PSI) D790 21,000
Flexural Modulus (PSI) D790 575,000
Compressive Strength (PSI) D695 21,500
Compressive Modulus (PSI) D695 430,000
Izod Impact (Notched), ft-lb/in D256 0.6
Rockwell Hardness D785 M95, R125

Thermal

Coefficient of Thermal Expansion,
10^-5/°F
D696 2.8
Heat Deflection Temperature 264 psi, ºF D648 250
Glass Transition Temp, ºF D3418 NA
Continous Service Temp (Operating), °F  - 425
Thermal Conductivity, BTU-in/hr-ft² °F C177 2
Flammability Rating UL94 VO

Electrical

Dielectric Strength, Short Term,
(Volts/Mil) @ .125″ Thick
D149 540
Volume Resistivity (ohm-cm) @ 50% RH D257 4.50 x 10^16
Dielectric Constant at 1 MHz D150 3
Dissipation Factor at 1 MHz D150 0.0013

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.