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Thermoplastic · High-performance

Expert

PEI / ULTEM

Polyetherimide · ULTEM 1010 · ULTEM 9085

Aerospace-grade, flame-retardant, and stable past 170°C. Needs an industrial high-temp printer.

Print temperatures

Nozzle 350–390 °C Bed 140–160 °C

PEI/ULTEM is an aerospace-grade engineering plastic — flame-retardant, low-smoke, strong at high temperature (glass transition ~186 °C) — used in aircraft interiors, medical, and electronics. ULTEM 9085 is certified for aircraft cabin parts.

In FDM it's a high-end material requiring an industrial high-temp printer: very high nozzle temps, a heated chamber, and a hardened all-metal hotend.

Strengths & trade-offs

  • Exceptional heat resistance (continuous ~170 °C+)
  • Flame-retardant and very low smoke (aerospace-certified)
  • High strength and stiffness
  • Chemical and hydrolytic stability
  • Excellent dimensional stability
  • Requires an industrial high-temp printer with heated chamber
  • Very expensive
  • Hygroscopic — must dry
  • Demanding bed adhesion
  • Not for hobby printers

Best for

Aerospace cabin partsHigh-heat functional partsElectrical / electronic componentsSterilizable medical partsDemanding industrial end-use

Did you know

  • ULTEM 9085 is certified for aircraft interior parts — its low smoke and flame retardancy meet aviation safety standards.
  • SABIC has been the sole producer of ULTEM since buying GE Plastics in 2007.
  • PEI's glass transition is ~186 °C — hotter than most filaments even melt.
Printed Solid PEI Natural by Printed SolidPrinted SolidPrinted Solid PEI Naturaltransmission distanceTD 0.3PEI$110.00
Printed Solid PEI Natural by Printed SolidPrinted SolidPrinted Solid PEI Naturaltransmission distanceTD 0.3PEI$98.00
YOUSU PEI 3D Filament with multi-color 1.75mm 2.85mm 0.5kg by YousuYousuYOUSU PEI 3D Filament with multi-color 1.75mm 2.85mm 0.5kgtransmission distanceTD 0.3PEI$159.99
3DXTech PEI-9085 Black by 3DXTech3DXTech3DXTech PEI-9085 BlackPEI-9085$98.00
FIBREX PEI+GF30 - Natural by 3DXTech3DXTechFIBREX PEI+GF30 - Naturaltransmission distanceTD 0.3PEI$125.00
3DXTech PEI-1010 Natural by 3DXTech3DXTech3DXTech PEI-1010 NaturalPEI-1010$525.00
3DXTech PEI-1010 Natural by 3DXTech3DXTech3DXTech PEI-1010 NaturalPEI-1010$70.00
3DXTech PEI-1010 Natural by 3DXTech3DXTech3DXTech PEI-1010 NaturalPEI-1010$525.00
3DXTech PEI-9085 Natural by 3DXTech3DXTech3DXTech PEI-9085 NaturalPEI-9085$525.00
3DXTech PEI-9085 Black by 3DXTech3DXTech3DXTech PEI-9085 BlackPEI-9085$80.00
3DXTech CARBONX PEI 9085+CF — Black (1.75mm, 2kg) by 3DXTech3DXTech3DXTech CARBONX PEI 9085+CF — Black (1.75mm, 2kg)PEI-CF$790.00
3DXTech ThermaX PEI 1010 — Natural (1.75mm, 250g) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Natural (1.75mm, 250g)PEI$70.00
3DXTech PEI-9085 Black by 3DXTech3DXTech3DXTech PEI-9085 BlackPEI-9085$525.00
3DXTech TRITON PEI 9085 — Natural (184in³) by 3DXTech3DXTech3DXTech TRITON PEI 9085 — Natural (184in³)PEI$985.00
3DXTech ThermaX PEI 1010 — Natural (1.75mm, 500g) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Natural (1.75mm, 500g)PEI$98.00
3DXTech ThermaX PEI 1010 — Natural (1.75mm, 1kg) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Natural (1.75mm, 1kg)PEI$195.00
3DXTech ThermaX PEI 1010 — Black (1.75mm, 2kg) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Black (1.75mm, 2kg)transmission distanceTD 0.3PEI$390.00
3DXTech FIBREX PEI+GF30 — Natural (1.75mm, 500g) by 3DXTech3DXTech3DXTech FIBREX PEI+GF30 — Natural (1.75mm, 500g)PEI-GF$175.00
3DXTech FIBREX PEI+GF30 — Natural (1.75mm, 1kg) by 3DXTech3DXTech3DXTech FIBREX PEI+GF30 — Natural (1.75mm, 1kg)PEI-GF$395.00
3DXTech CARBONX PEI 9085+CF — Black (1.75mm, 250g) by 3DXTech3DXTech3DXTech CARBONX PEI 9085+CF — Black (1.75mm, 250g)PEI-CF$98.00
3DXTech CARBONX PEI 9085+CF — Black (1.75mm, 500g) by 3DXTech3DXTech3DXTech CARBONX PEI 9085+CF — Black (1.75mm, 500g)PEI-CF$195.00
3DXTech FIBREX PEI+GF30 — Natural (1.75mm, 250g) by 3DXTech3DXTech3DXTech FIBREX PEI+GF30 — Natural (1.75mm, 250g)PEI-GF$125.00
3DXTech TRITON PEI 1010 — Black (92in³) by 3DXTech3DXTech3DXTech TRITON PEI 1010 — Black (92in³)PEI$525.00
3DXTech ThermaX PEI 1010 — Black (1.75mm, 1kg) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Black (1.75mm, 1kg)PEI$195.00
3DXTech ThermaX PEI 1010 — Black (1.75mm, 500g) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Black (1.75mm, 500g)PEI$98.00
3DXTech ThermaX PEI 1010 — Natural (1.75mm, 2kg) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Natural (1.75mm, 2kg)PEI$390.00
3DXTech ThermaX PEI 1010 — Black (1.75mm, 250g) by 3DXTech3DXTech3DXTech ThermaX PEI 1010 — Black (1.75mm, 250g)PEI$70.00
Printed Solid PEI Gray by Printed SolidPrinted SolidPrinted Solid PEI Graytransmission distanceTD 0.3PEI$79.99
PEI 1010 Natural by PrusamentPrusamentPEI 1010 Naturaltransmission distanceTD 0.3PEI$149.00
Push Plastic PEI 9085 — Default Title (2.85mm, 500g) by Push PlasticPush PlasticPush Plastic PEI 9085 — Default Title (2.85mm, 500g)PEI$99.99
Push Plastic PEI 1010 — Default Title (2.85mm, 500g) by Push PlasticPush PlasticPush Plastic PEI 1010 — Default Title (2.85mm, 500g)PEI$99.99
Push Plastic PEI 9085 — Default Title (1.75mm, 500g) by Push PlasticPush PlasticPush Plastic PEI 9085 — Default Title (1.75mm, 500g)PEI$99.99
Push Plastic PEI Gray by Push PlasticPush PlasticPush Plastic PEI Graytransmission distanceTD 0.3PEI$599.99
Push Plastic PEI Gray by Push PlasticPush PlasticPush Plastic PEI Graytransmission distanceTD 0.3PEI$599.99
Push Plastic PEI Gray by Push PlasticPush PlasticPush Plastic PEI Graytransmission distanceTD 0.3PEI$599.99
Push Plastic PEI 1010 — Default Title (1.75mm, 500g) by Push PlasticPush PlasticPush Plastic PEI 1010 — Default Title (1.75mm, 500g)PEI$99.99
Push Plastic PEI by Push PlasticPush PlasticPush Plastic PEItransmission distanceTD 0.3PEI$599.99
3DXTech PEI-1010 Black by 3DXTech3DXTech3DXTech PEI-1010 BlackPEI-1010$525.00
3DXTech PEI-9085 Red by 3DXTech3DXTech3DXTech PEI-9085 RedPEI-9085$130.50
3DXTech Triton ESD-PEI Ultem 1010 — Black (1.75mm, 92in³) by 3DXTech3DXTech3DXTech Triton ESD-PEI Ultem 1010 — Black (1.75mm, 92in³)transmission distanceTD 0.3PEI$795.00
3DXTech 3DXSTAT ESD-PEI Ultem 1010 — Black (1.75mm, 2kg) by 3DXTech3DXTech3DXTech 3DXSTAT ESD-PEI Ultem 1010 — Black (1.75mm, 2kg)PEI$975.00
3DXTech 3DXSTAT ESD-PEI Ultem 1010 — Black (1.75mm, 500g) by 3DXTech3DXTech3DXTech 3DXSTAT ESD-PEI Ultem 1010 — Black (1.75mm, 500g)PEI$275.00
3DXTech TRITON PEI 1010 — Natural (92in³) by 3DXTech3DXTech3DXTech TRITON PEI 1010 — Natural (92in³)PEI$525.00
3DXTech Triton PEI 1010 Breakaway Support — Natural (1.75mm, 92in³) by 3DXTech3DXTech3DXTech Triton PEI 1010 Breakaway Support — Natural (1.75mm, 92in³)PEI$525.00
FormFutura PEI Standard by FormFuturaFormFuturaFormFutura PEI Standardtransmission distanceTD 0.3PEI204,39 €
PEI ULTEM 1010 by FormFuturaFormFuturaPEI ULTEM 1010PEI223,13 €
AzureFilm PEI Other by AzureFilmAzureFilmAzureFilm PEI Othertransmission distanceTD 0.3PEI$18.25
AzureFilm PEI Other by AzureFilmAzureFilmAzureFilm PEI Othertransmission distanceTD 0.3PEI$17.13$21.49Sale
AzureFilm PEI Other by AzureFilmAzureFilmAzureFilm PEI Othertransmission distanceTD 0.3PEI$21.08$54.17Sale
3DXTech PEI Black by 3DXTech3DXTech3DXTech PEI Blacktransmission distanceTD 0.3PEI$70.00
3DXTech PEI-9085 Black by 3DXTech3DXTech3DXTech PEI-9085 BlackPEI-9085$525.00
3DXTech PEI-1010 Black by 3DXTech3DXTech3DXTech PEI-1010 BlackPEI-1010$70.00