Polysulfone – PSU

Polyester, PET, PBT For Dummies. AKA, For The BeginnerAmerican Made Plastics



Why use Polysulfone – PSU:


  • Excellent Mechanical and Electrical Properties
  • Very Dimensionally Stable
  • Repeat Sterilization and Autoclavable
  • UL 94 V-O @.176″ thickness
  • Easily Machinable and Chemical Resistance



Polyester, PET, PBT For Experts




This materials is…

an amorphous high performance thermoplastic material that has proven performance at elevated temperatures. Great mechanical properties with thermal stability allow for its use in load bearing applications over broad temperature ranges. close tolerance.

  • 320ºF Continuous Use Temperature
  • Flammability Rated at UL 94 V-0
  • High Impact Resistance
  • Low Moisture Absorption
  • Chemically Resistant To Many Acids and Solvents
  • Gamma Radiation Resistance

This material is used frequently in a Medical and Pharmaceutical Manufacturing. Common use in Aircraft, Aerospace and Appliance Manufacturing.  A popular material for tight tolerance and high heat. Excellent for Electrical and Electronic, Medical Instruments and Trays. Polysulfone – PSU has several trade names: Unifone®, Ensifone®, Thermalux®, Udel®, Ultrason® and others.

American Made Plastics

Mfg Data Sheet Polysulfone - PSUData Sheet

Typical MSDS Polysulfone - PSUTypical MSDS Sheet


Machining Guidelines Button Nylon - PolyamideMachining GuidelinesChemical Resistance Button ABSChemical Resistant Chart

Applications – Frequently used in:

  • Food Equipment and Dairy Processing
  • Wear and Slide machined parts
  • Electronics Manufacturing and Fixtures
  • Pistons, Manifolds, Timing Screws, Scraper Blades
  • Food Processing Forming Dies

Materials Available As

.032″ (1/32″) – 3.0″ in Natural (Amber Transparent) in 24″ X 48″

.250″ – 6.0″ diameter in Natural (Amber Transparent) in various lengths

.001″ – .029″ in Natural (Amber Transparent) in 24″ wide roll stock, minimums apply

Call with your requirements, many sizes available, minimums apply


Special Formulations:
Non standard colors, thickness, size or formula, please call for details

American Made Plastics

Typical Resin Properties:

General PropertyASTM TestTypical Value
Specific Gravity D7921.24
Tensile Strength YieldD63810,200
Izod Impact – NotchedD2561.3
Hardness – RockwellD785R120
Deflection Temp @ 264psiD648345
Deflection Temp @ 66 psiD648358
Co. Thermal ExpansionD6963.1X10-5
Mfg Data Sheet Polysulfone - PSUData SheetTypical MSDS Polysulfone - PSUTypical MSDS Sheet
Machining Guidelines Button Nylon - PolyamideMachining GuidelinesChemical Resistance Button ABS
Chemical Resistant Chart

These Properties are for evaluation purposes only. This information is not to be construed as a warranty, guarantee or assurance that you may achieve the same results. Materials made from different resin types, manufacturing techniques and manufacturers will react differently. The information should be used to compare against other materials only, and each user should make his own tests to determine suitability. No warranty as to this materials suitability are either expressed or implied.

For excellent toughness and high temperature resistance, Polysulfone – PSU is an excellent choice.