Techtron® PPS (Polyphenylene Sulfide)

Techtron® PPS (polyphenylene sulfide) is the ideal for structural applications in corrosive environments. It has excellent chemical resistance up to 392 degrees F. It is an excellent lower cost alternative to PEEK at lower temperatures.  Techtron® PPS is off white in color and is available in a wide range of rod and sheet sizes.  It is now available as FDA compliant with advance notice. It is easily machined with common metal working equipment. Tolerances of +/-.001 can be achieved with experience.


Specification Test Value Units
Specific Gravity, 73°F D792  1.35
Tensile Strength @ Yield, 73°F D638  13,500 psi
Tensile Modulus of Elasticity, 73°F D638  500,000 psi
Tensile Elongation (at break), 73°F D638  15 %
Flexural Strength, 73°F D790  21,000 psi
Flexural Modulus of Elasticity D790  575,000 psi
Shear Strength, 73°F D732  9,000 psi
Compressive Strength – Ultimate psi
Compressive Strength at 2% Deformation D695 psi
Compressive Strength at 10% Deformation D695  21,500 psi
Deformation Under Load %
Compressive Modulus of Elasticity, 73°F D695  430,000
Compressive Strength ⊥ to Laminate (Modulus) psi
Compressive Strength ⊥ to Laminate (Yield) psi
Compressive Strength ⊥ to Laminate (Ultimate) psi
Hardness, Durometer (Shore “D” scale) D2240  D85
Hardness, Rockwell (Scale as noted) D785  M95 (R125) Rockwell M
Izod Impact, Notched @ 73°F D256 Type A  0.6 ft.lbs/in. of notch
Coefficient of Friction (Dry vs Steel) Static PTM55007
Coefficient of Friction (Dry vs Steel) Dynamic PTM55007  0.40
Maximum Static Bearing Load (P) PTM55007 psi
Maximum Unlubricated No Load Bearing Velocity (V) PTM55007 ft/minute
Maximum Limiting PV (Unlubricated) PTM55007  3,000 psi x ft/min.
Wear Factor “K” x 10-10 PTM55010  2,400 Cubic in.-min/
Sand Wheel Wear/Abrasion Test UHMW=100
Minimum Mating Surface Hardness Rockwell (Brinnell)
Coefficient of Linear Thermal Expansion E-831(TMA)  2.80 in/in/°F x 10-5
Coefficient of Thermal Expansion // to Laminates E-831(TMA)  2.8 in/in/°F x 10-5
Coefficient of Thermal Expansion I to Laminates E-831(TMA)  2.8 in/in/°F x 10-5
Softening Point °F
Heat Deflection Temperature 264 psi D648 250 °F
Embrittlement Temperature °F Min.
Continuous Service Temperature in Air  425 °F Max.
Short Term Service Temperature  450 °F Max.
Tg-Glass Transition (Amorphous) D3418  N/A °F
Melting Point (Crystalline) Peak D3418  540 °F
Thermal Conductivity F433  2 BTU-in/(hr/ft2°F)
Dielectric Strength Short Term D149  540 Volts/mil
Surface Resistivity D257  >1013 ohm/cm
Volume Resistivity D257 ohm/cm
Dielectric Constant, 106 Hz D150  3.0
Dissipation Factor, 106 Hz D150  0.0013
Flammability @ 3.1mm(1/8 in.) UL94 UL94  V-O
Arc Resistance seconds
Water Absorption, Immersion 24 Hours D570 (2)  0.01 %
Water Absorption, Immersion Saturation D570 (2)  0.03 %
Machinability Rating  3 1=easy, 10=difficult
Rod Diameter Availability (Off the Shelf)  .375-4.0 inches
Sheet Thickness Availability (Off the Shelf)  .250-2.5 inches
Characteristics / Attributes  Excellent Chemical Resistance / Easily Machined / FDA