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About The Materials 

ThermaX™ PSU [Polysulfone] is a high-temperature amorphous polymer that offers excellent mechanical, thermal, and chemical resistance properties.

Materials Documentations

ThermaX™ PSU 3D Printing Filament

Polysulfone (PSU) is a high-temperature aromatic sulfone polymer. PSU has excellent thermal and chemical resistance, making it well suited for demanding applications in automotive, aerospace, electronics, defense, food service, industrial, plumbing, medical, semi-con applications.

PSU is an excellent alternative to ULTEM™ 9085.

While having a lower cost per kilogram and lower density (giving you more filament per kilogram as well), it maintains superior thermal properties. Its higher Tg and HDT give it higher strength and stiffness at elevated temperatures.

Benefits of ThermaX™ PSU:

  • Very high thermal properties superior to Ultem™ 9085

  • Excellent hydrolytic resistance

  • High Environmental Stress Crack Resistance (ESCR)

  • Sterilization capable, including EtO gas, radiation, steam autoclaving, plasma, dry heat and cold sterilization

  • Exceptional strength and modulus, even at elevated temperatures

  • Outstanding impact resistance

  • Highly resistant to even large (10 Mrd) doses of gamma radiation

  • Resists most common automotive fluids including gasoline, antifreeze, transmission fluids, motor oils, power steering fluid, windshield washer fluid (ESCR, 24 hrs, 100°C)

  • Inherently flame retardant with low smoke evolution and low smoke toxicity

  • Excellent dimensional stability with low creep sensitivity, low and uniform coefficient of thermal expansion, and highly reproducible part-to-part dimensions.


Materials Informations