High Performance Polymers

PEKK for SLS - Properties Similar to ULTEM™ Filament*

Materials in this family of polymers are chemical compounds with ether and ketone groups. Compared to other plastics, they have very high glass transition and melting temperatures, which is why they are used in high-temperature applications. PAEK materials are semi-crystalline aromatic polyetherketones with excellent mechanical properties even at high temperatures. They permit continuous operating temperatures of up to 260°C. They are flame-retardant and have high chemical resistance, hydrolysis resistance, high stiffness and strength, as well as very good tribological properties. 

Fields of Application

Thanks to their long service life, PAEK polymers are often used to make high-performance molded parts in industrial contexts, e.g. bearing cages, gearwheels and impellers in pumps and high-pressure systems, especially ones that come into contact with aggressive media. The medical field uses them as a biocompatible material to manufacture sterilizable medical devices or patient-specific implants. They are more cost-efficient than metal implants, and they also avoid some of the associated side-effects, such as sensitivity to the weather. The aerospace industry uses this inherently flame-retardant material as a substitute for metal in the interior and air conditioning systems.

* ULTEM™ is a registered trademark of SABIC or its affiliates or subsidiaries

Typical Part Properties

  • Tensile Modulus 6500 MPa
  • Tensile Strength 71 MPa
  • Elongation at Break 1.16 %
  • Melting Temperature (20°C/min) 302 °C
  • Heat Deflection Temperature (1.80 MPa) 212 °C
  • Heat Deflection Temperature (0.45 MPa) 275 °C
  • Density 1390 kg/m³

High Performance


The HT-23 is based on a PEKK resin with 23% Carbon Fiber compounded in and ground to a fine powder.


  • Isotropic properties
  • Melt compounded Carbon Fiber filled PEKK
  • High melt point and inherently flame retardant
  • Chemical resistant
  • Certified to pass the FAR 25.853 60 second vertical burn requirement

Typical Applications

  • Aerospace
  • Mobility industry
  • Complex geometries requiring accuracy and feature resolution
  • Well suited to applications which require superior thermal properties, with maximum performance and consistent properties in XY&Z dimensions

Compatible Printers

Typical Part Properties

  • Tensile Modulus 4100 MPa
  • Tensile Strength 86 MPa
  • Elongation at Break 2.4 %
  • Heat Deflection Temperature (0.45 MPa) 249 °C
  • Heat Deflection Temperature (1.80 MPa) 165 °C
  • Density 1290 kg/m³

High Performance

PEKK 100

Unfilled PEKK combining high impact strength while maintaining high tensile strength.


  • High chemical resistance at high operating temperatures
  • Replacement of injection moulded PA 6 GF (glass fiber filled Polyamide 6)
  • High dielectric strength g Material inherent flame retardancy (UL 94-V0)

Typical Applications

  • Aerospace
  • Mobility industry
  • Industrial applications requiring high abrasion resistance and good sliding friction properties
Global Take-back Program for Used Polymer Materials & Parts

The VIRTUCYCLE® program globally takes back used polymer material and 3D printed parts, using 100 % renewable energy to transform powder into recycled high-performance injection molding granules & extrusion products. EOS carried out a Life Cycle Analysis, critically reviewed by TÜV Süd, which confirmed that 1 kg of polymer material converted into 0,945 kg granules saves up to 7 kg of CO2e compared to the raw material, in order to verify the positive environmental impact.

Polymer part and powder heap | © EOS

Germany-centered Take-back Program for Used Polymer Materials & Parts

KaJo Plastic GmbH & Co. KG takes back even small quantities of used polymer material and 3D printed parts, transforming powder into recycled injection molding granules and more. KaJo Plastic GmbH & Co. KG serves customers in Germany and surrounding countries, e.g., Netherlands, Switzerland, Austria or France.