Polysulfone (PSU) Injection Molding

Polysulfone or PSU is a durable, rigid thermoplastic that can withstand use at high temperatures


Polysulfone is an amorphous thermoplastic with natural transparency. In most cases the plastic is suitable for continuous use up to 149°C (300°F). PSU is also resistant to degradation by gamma or electron beam radiation.

We offer two grades of PSU through our injection molding service:

Udel P-1700: High resistance to mineral acids, alkali and salt solutions. It also possesses good resistance to detergents and hydrocarbon oils.

Udel P-3703: A high-flow grade of PSU that fills thin walls well. Can be more susceptible to cracking than P-1700 when in harsh environments.


Polysulfane (PSU) Material Properties

  Tensile Modulus
Tensile Stress

Tensile Elongation 

Melt Mass-Flow Rate Volume Resistivity Data Sheet
Test Method ASTM D638 ASTM D638 ASTM D638 ASTM D1238 ASTM D257  
Udel P-1700 2,480 MPa 70.3 MPa 50 to 100% 6.5 g/10 min 3.0E+16 ohms-cm VIEW PDF
Udel P-3703 2,480 MPa 70.3 MPa 50 to 100% 17 g/10 min 5.0E+16 ohms-cm VIEW PDF

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