PSU filament TECAFIL PSU natural 655px
PSU filament TECAFIL PSU natural 655px
120.00 EUR
TECAFIL PSU natural is a PSU filament that, like PPSU and PES, is classified in the group of polyphenylene sulfones and thus belongs to the high performance plastics. Its properties are similar to those of PPSU filament.
This PSU filament is heat resistant up to 160 °C (continuous service temperature) and is characterised by high toughness even at low temperatures. It also exhibits high creep resistance over a wide temperature range.
Like PEEK and PEI, PSU has been used in industry for many years, mainly for applications that require high durability and are exposed to high temperatures.
Therefore, PSU filament is often a cost-effective alternative to PEEK or PEI for less demanding environments. In contrast, it often replaces polycarbonates, especially at higher temperatures when some transparency is still required.
A PSU filament offers advantages in 3D printing due to low warpage.
The base polymer of this filament meets the requirements for food contact according to (EC) No 1935/2004, (EU) No 10/2011, (EC) No 2023/2006 and FDA. Legally binding documents must be requested separately.




Chemical designation
PSU (Polysulfone)
1.23 g/cm3 (*2)

Main Features

  • electrically insulating
  • high dimensional stability
  • good heat deflection temperature
  • resistance against high energy radiation

Target industries

Technical details

  • product-technical-detail-collapse-item-0-lvl-1
    General material information Value Unit Parameter Norm
    Diameter 1,75 +/- 0,05 mm -
    Spool measurements Ø 52 mm holder -
    Spool measurements 55 mm width -
    Spool measurements Ø 200 mm outer diameter -
    Spool Material Polycarbonate - -
    Filament Load per Spool 500 g -
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    Mechanical properties Value Unit Parameter Norm
    Tensile strength 75 MPa 50 mm/min DIN EN ISO 527-1
    Modulus of elasticity
    (tensile test)
    2550 MPa 50 mm/min DIN EN ISO 527-1
    Elongation at break (tensile test) - % 50 mm/min DIN EN ISO 527-1
    Flexural strength - MPa 2 mm/min, 10 N DIN EN ISO 178
    Modulus of elasticity
    (flexural test)
    - MPa 2 mm/min, 10 N DIN EN ISO 178
  • product-technical-detail-collapse-item-2-lvl-1
    Thermal properties Value Unit Parameter Norm
    Glass transition temperature 187 C ASTM D 3418
    Melting temperature - C DIN EN ISO 11357
    Deflection temperature 177 C HDT-A ISO-R 75 Method A
    Service temperature 180 C short term -
    Service temperature 160 C long term -
    Thermal expansion (CLTE) 5,3 10-5*1/K DIN EN ISO 11359-1;2
  • product-technical-detail-collapse-item-3-lvl-1
    Other properties Value Unit Parameter Norm
    Moisture absorption 0,8 % DIN EN ISO 62
  • product-technical-detail-collapse-item-4-lvl-1
    Processing parameter Value Unit Parameter Norm
    Nozzle temperature 340 - 380 C -
    Max. melt temperature 400 C -
    Print bed temperature 160 - 200 C -
    Build chamber temperature 160 - 190 C -
    Nozzle diameter 0,4 mm -
    Print speed 30 - 40 mm/s -
    Fan speed 0 % -
  • product-technical-detail-collapse-item-5-lvl-1
    Predrying Value Unit Parameter Norm
    Drying temperature 120 C -
    Drying time 8 h -