PEI 9085

Fiberlogy PEI 9085 - ULTEM 9085 Resin 3D Printing Filament

PEI 9085 (made of ULTEMTM 9085 resin) is a material with an exceptional strength. It is used on a daily basis in the most demanding sectors, such as aviation, rail transport and automotive industry. Thanks to its unique properties, such as incombustibility (UL 94 V0) and non-toxicity, it is valued and approved by aircraft manufacturers (FAR 25.853) and rail industry (EN 45545). Components made of ULTEMTM resin are effective substitutes for metal elements, combining the resistance of steel and the lightness of aluminum. This makes it possible to reduce the time and expenses connected to development and manufacturing fully functional parts.

PEI 9085 stands out with its high resistance to abrasion, elevated temperature of up to 180°C, solvents and UV radiation. All this makes it an excellent choice for applications designed to operate in extreme conditions. Additionally, it is characterized by its high dielectric strength and good thermal conductivity. In comparison to other materials such as PEEK and PEKK, PEI 9085 shows slightly lower strength, stability and creep resistance.

3D printing with PEI 9085 is only possible with the use of printers adapted to processing high-temperature materials (e.g., PEEK, PEKK, PEI, etc.). To obtain high-quality prints, it is essential to use a heated chamber which provides even heat distribution.


  • AVIATION: machine parts, construction elements, ventilation system elements
  • AUTOMOTIVE INDUSTRY: motor parts, replacement parts, detector casings
  • ELECTRONICS: connections, electronics casings, cable insulation, fuel cell parts
  • MILITARY INDUSTRY: weapon system guards, lighting system casings, optical system casings
PEI 9085
Diameter Net weight Colors
1.75 mm 0.5 kg

PEI 9085 properties:

  • abrasion resistance
  • resistance to temperatures exceeding 190°C and UV radiation
  • incombustible and low smoke emission
  • high mechanical strength
  • chemical resistance
  • low shrinkage

How to print PEI 9085?

The following parameters are only suggested print settings for this material. To ensure the best print quality, it is necessary to choose the appropriate settings for a specific printer and printing conditions.

Nozzle Temperature 350-380°C
Bed Temperature 160°C
Closed chamber >80°C
Fan 0-25%
Flowrate 90-100%
Printing Speed 30-60 mm/s
Surface Magigoo Pro HT
Retraction (direct) yes, 1-2 mm
Retraction Speed 20-45 mm/s
Drying conditions 120°C / 6h – Higher drying temperatures can lead to deformation of the spool

Properties of PEI 9085 - ULTEM 9085

Diameter Diameter tol Oval tol Printing temp Table temp
1.75 mm +/- 0.02 mm + 0.01 mm 350-380°C 160°C

Colors: PEI 9085

Fiberlogy PEI 9085 Natural


Fourth dimension
of printing