PSU 1000 (Polysulfone)

PSU 1000 (Polysulfone) is an amber semi-transparent, heat resistant, high performance engineering thermoplastic.  It offers excellent mechanical, electrical and improved chemical resistance properties relative to polycarbonate.  Properties remain consistent over a broad temperature range.  It is hydrolysis resistant for continuous use in hot water and steam.

PSU 1000 Polysulfone offers high chemical resistance to acidic and salt solutions, and good resistance to detergents, hot water and steam.  Polysulfone has excellent radiation stability, and offers low ionic impurity levels.  It is commonly used for analytical instrumentation, medical devices and seminconductor process equipment components.

Specification Test Value Units
Specific Gravity, 73°F D792  1.24
Tensile Strength @ Yield, 73°F D638  10,200 psi
Tensile Modulus of Elasticity, 73°F D638  390,000 psi
Tensile Elongation (at break), 73°F D638  30 %
Flexural Strength, 73°F D790  15,000 psi
Flexural Modulus of Elasticity D790  400,000 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  13,000 psi
Deformation Under Load %
Compressive Modulus of Elasticity, 73°F D695  375,000
Compressive Strength ⊥ to Laminate (Modulus) psi
Compressive Strength ⊥ to Laminate (Yield) psi
Compressive Strength ⊥ to Laminate (Ultimate) psi
Hardness, Durometer (Shore “D” scale) D2240  D80
Hardness, Rockwell (Scale as noted) D785  M82 (R128) Rockwell M
Izod Impact, Notched @ 73°F D256 Type A  1.3 ft.lbs/in. of notch
Coefficient of Friction (Dry vs Steel) Static PTM55007
Coefficient of Friction (Dry vs Steel) Dynamic PTM55007      –
Maximum Static Bearing Load (P) PTM55007 psi
Maximum Unlubricated No Load Bearing Velocity (V) PTM55007 ft/minute
Maximum Limiting PV (Unlubricated) PTM55007      – psi x ft/min.
Wear Factor “K” x 10-10 PTM55010      – Cubic in.-min/
Sand Wheel Wear/Abrasion Test UHMW=100
Minimum Mating Surface Hardness Rockwell (Brinnell)
Coefficient of Linear Thermal Expansion E-831(TMA)  3.10 in/in/°F x 10-5
Coefficient of Thermal Expansion // to Laminates E-831(TMA) in/in/°F x 10-5
Coefficient of Thermal Expansion I to Laminates E-831(TMA) in/in/°F x 10-5
Softening Point °F
Heat Deflection Temperature 264 psi D648  340 °F
Embrittlement Temperature °F Min.
Continuous Service Temperature in Air  300 °F Max.
Short Term Service Temperature °F Max.
Tg-Glass Transition (Amorphous) D3418  374 °F
Melting Point (Crystalline) Peak D3418  N/A °F
Thermal Conductivity F433  1.8 BTU-in/(hr/ft2°F)
Dielectric Strength Short Term D149  425 Volts/mil
Surface Resistivity D257 >1013 ohm/cm
Volume Resistivity D257 ohm/cm
Dielectric Constant, 106 Hz D150  3.14
Dissipation Factor, 106 Hz D150  0.0008
Flammability @ 3.1mm(1/8 in.) UL94 UL94  HB
Arc Resistance seconds
Water Absorption, Immersion 24 Hours D570 (2)  0.3 %
Water Absorption, Immersion Saturation D570 (2)  0.6 %
Machinability Rating  3 1=easy, 10=difficult
Rod Diameter Availability (Off the Shelf)  .25 6.0 inches
Sheet Thickness Availability (Off the Shelf)  .25 2.50 inches
Characteristics / Attributes  Excellent Chemical Resistance / Easily Machined