3D Printing InfoWhere it is used
Aircraft interior parts and rail rolling stock, where the flame, smoke and toxicity rating is the requirement
Sources
- ThermaX PEI 9085 Technical Data Sheet v4 · 2026-08 · tds
High-temperature polymers · Material guide
PEI (ULTEM 9085)
The aircraft-interior PEI: UL 94 V-0 plus a documented flame, smoke and toxicity pedigree, HDT 178 °C at 0.45 MPa, and the best-characterised anisotropy in this dataset — Stratasys…
Open in interactive comparisonUnderstand the material
At a glance
Before you print
- Setup difficulty
- Expert / industrial hardware only
- Nozzle wear
- Non-abrasive when unfilled
Read the full material overview
The aircraft-interior PEI: UL 94 V-0 plus a documented flame, smoke and toxicity pedigree, HDT 178 °C at 0.45 MPa, and the best-characterised anisotropy in this dataset — Stratasys publishes XZ and ZX values side by side across three printers and three tips.
Applications
ULTEM 9085 is used for lightweight interior components where mechanical performance must accompany documented flame, smoke and toxicity behavior. Stratasys lists production parts and demanding tooling, and its Airbus program specifically identifies nonstructural brackets and system-installation parts manufactured by FDM. On-demand production can also reduce the inventory and lead-time burden of low-volume components.
Interior applications depend on a controlled combination of material, geometry and production process; the Airbus result does not qualify an arbitrary 9085 print. For mechanical design, account for the lower thermal ceiling than 1010 and the substantial difference between in-plane and cross-layer impact behavior. Drying, chamber control and warp management are demanding, and attachment details should distribute loads instead of concentrating them at thin printed features.
Airbus A350 nonstructural brackets ↗
FDM · ULTEM 9085 within the documented Airbus/Stratasys production program · Documented case
Stratasys Direct Manufacturing was selected to supply FDM ULTEM 9085 brackets and other system-installation parts for the A350, using its production controls and quality procedures.
Find printable models
Check the model’s material and process notes before choosing a filament.
Plan your printer setup
All print settings ↓Printing quick reference
Representative catalog values. Check the exact grade and its linked conditions before using a setting.
Nozzle temperature (°C)
—
Full value & sources
—
—Bed temperature (°C)
130–140 (3DXTech)
Enclosure
Actively heated chamber required
Full value & sources
Actively heated chamber required
- Prusament PEI 1010 Technical Datasheet v1.0 · 2024-09 · tds
- Prusament PEI 1010 — material page · 2026-08 · doc
Drying
—
Full value & sources
—
—Go deeper when you need to
39 documented fieldsProperties & source data
Open a topic to explore the complete data. Each value keeps its original conditions, units and dated sources.
Material & market7 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Base polymer / chemistry | Polyetherimide, ULTEM 9085 grade — the flame-retardant PEI used for aircraft interiors | 1 source
|
| Density (g/cm³) | 1.34 (ISO 1183, 3DXTech) against 1.27 specific gravity on moulded plaques (ASTM D792, Stratasys) — the two suppliers disagree | 2 sources
|
| Typical price (USD/kg) | 1 kg-equivalent spools cluster near 298 | 4 sources
|
| Price range across brands (USD/kg) | 220-392 across brands and formats; 3DXTech ThermaX PEI 9085 220 at 2 kg, 3D4Makers 270 at 2 kg, Fiberlogy 298 at 500 g, Kimya 321 at 500 g, IEMAI 3D 385 at 1 kg, 3DXTech CarbonX PEI 9085+CF 392 | 5 sources
|
| Market availability (1–5) | Niche, a handful of specialist brands | 4 sources
|
| Spool sizes & diameters | 1.75 and 2.85 mm; 250 g to 2 kg spools, plus Stratasys canisters | 3 sources
|
| Typical applications | Aircraft interior parts and rail rolling stock, where the flame, smoke and toxicity rating is the requirement | 1 source
|
Print settings4 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Bed temperature (°C) | 130–140 (3DXTech) | 1 source
|
| Enclosure / chamber requirement (1–5) | Actively heated chamber required | 2 sources
|
| Warping tendency (1–5) | Severe — heated chamber needed | 1 source
|
| Overall printing difficulty (1–5) | Expert / industrial hardware only | 2 sources
|
Nozzle wear & reliability3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Nozzle hardness required (1–4) | Brass fine indefinitely for unfilled grades, but brass softens near these nozzle temperatures — hardened or plated hot ends are the norm | 1 source
|
| Abrasiveness (1–5) | Non-abrasive when unfilled | 1 source
|
| Nozzle clog risk (1–5) | Moderate — needs dry filament and a clean nozzle; 3DXTech lists no special nozzle concerns but a mandatory 120 °C pre-dry before every print | 1 source
|
Moisture & drying1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Effect of moisture on strength | No dry-versus-conditioned figures are published; 3DXTech mandates a 120 °C, 4 h pre-dry before every print because trapped water flashes to steam at these nozzle temperatures | 1 source
|
Strength & mechanical properties12 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Tensile strength (XY) (MPa) | 63-77 at break (printed XZ, ASTM D638, Stratasys F900/F3300/Fortus 450mc, three tips and two colours); 54 (printed XY, ISO 527, 3DXTech) | 2 sources
|
| Young's modulus (MPa) | 2040-2540 (printed XZ, ASTM D638, Stratasys); 2050 (printed XY, ISO 527, 3DXTech) | 2 sources
|
| Elongation at break (%) | 5.4-9.1 at break (printed XZ, ASTM D638, Stratasys); 1.9-4.3 in ZX; 3DXTech quotes 3 (ISO 527) | 2 sources
|
| Flexural strength (MPa) | 104-116 at break (printed XZ, ASTM D790 Procedure A, Stratasys); 72-98 in ZX; 3DXTech quotes 90 (ISO 178) | 2 sources
|
| Flexural modulus (MPa) | 2400-2550 (printed XZ, ASTM D790, Stratasys F900 T16 and T16A) against 2120-2130 in ZX; 3DXTech quotes 2170 (ISO 178) | 2 sources
|
| Other impact data | Izod notched 88.5-140 J/m XZ against 37-80 J/m ZX; unnotched 647-2260 J/m XZ against 169-633 J/m ZX (printed, ASTM D256/D4812, Stratasys, across three printers and three tips) | 1 source
|
| Layer adhesion / Z tensile (MPa) | 39-63 at break (printed ZX, ASTM D638, Stratasys); the low end is the F900 T16 baseline, the high end the F3300 N500 hot end | 1 source
|
| Brittleness (1–5) | Brittle — snaps with little warning | 1 source
|
| Hardness (scale-specific) (Shore A / Shore D / Rockwell) | Rockwell M110 / R126 on extruded PEI stock (ASTM D785) | 1 source
|
| Creep resistance / sustained load (1–5) | Excellent — holds load for years. Printed ZX coupons keep 87 % of room-temperature tensile strength at 104 °C and 70 % at 132 °C (ASTM D638); extruded PEI stock is rated 170 °C long-term service | 2 sources
|
| Elasticity / flexibility (1–5) | Rigid | 1 source
|
| Z strength as % of XY (%) | 56-86 (Stratasys ZX against XZ tensile at break, ASTM D638, across F900/F3300/Fortus 450mc and T16/T20/T40A tips); 58 on the F900 T16 baseline | 1 source
|
Heat & temperature6 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| HDT at 0.45 MPa (°C) | 158 (printed XY, ISO 75 at 0.45 MPa, 3DXTech) to 178 (printed XY 178.2 and ZX 178.4, ASTM D648 Method B at 66 psi, Stratasys); moulded 176.9 | 2 sources
|
| HDT at 1.8 MPa (°C) | 170-173 (printed XY 170.2 and ZX 172.6, ASTM D648 Method B at 264 psi); moulded 172.9 | 1 source
|
| Glass transition (Tg) (°C) | 177 (moulded plaque, ASTM D7426 inflection point, Stratasys); 186 (DSC, 3DXTech) | 3 sources
|
| Continuous service temperature (°C) | 170 long-term service on extruded PEI stock, converted from 338 °F; 200 short term | 1 source
|
| Thermal expansion (CTE) (µm/m·K) | 44.9 (printed XY, -50 to 80 °C, ASTM E831), falling to 31.4 over 80-160 °C; ZX gives 44.5 over -50 to 60 °C. Black pigment raises it to 51.9 | 1 source
|
| Flammability / UL 94 | UL 94 V-0 at 1.5 mm on the base resin. Printed parts are tested to 14 CFR 25.853, BSS 7238 and 7239 and AITM 2.0007B and 3.0005 covering 60 s and 12 s vertical burn, 15 s horizontal burn, smoke density, toxic gas emission and OSU heat release | 2 sources
|
Weather & chemical resistance1 field
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| UV resistance (1–5) | Good — years with some colour shift. 1000 h of QUV cycling to ASTM G154 left printed ZX coupons at 55.5 MPa yield against 56.0 unexposed, with elongation and modulus unchanged | 1 source
|
Health & safety2 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Fume toxicity (1–5) | Moderate — measurable VOCs and UFPs, ventilation advised. None of these polymers was in the chamber study, and all are processed far above the temperatures it covered | |
| Ventilation / filtration requirement (1–5) | Ventilated room or enclosure recommended |
Solvents & solubility3 fields
| Property and unit | Published value and conditions | Sources and dates |
|---|---|---|
| Soluble in | Chlorinated hydrocarbons — dichloromethane and chloroform — are solvents for polyetherimide. Laboratory reagents. | |
| Softened or crazed by | Acetone, MEK, benzene, toluene and butyl acetate craze or stress-crack it; alcohols, fuels and dilute acids do not. | |
| Solvent welding & smoothing agent | Dichloromethane is the only welding route, and it is a controlled carcinogen rather than a workshop material. |
How to read these values
Values describe representative grades, not every spool. Manufacturer datasheets and independent tests retain their source labels and dates. Printed orientation, test method, conditioning and formulation can change results. Unknown values are —. A listed use is not a certification. Shore A, Shore D and Rockwell hardness are separate scales.
Find a specific filament
6 listingsProduct listings and datasheets
Historical USD/kg snapshots. Read each listing’s sale/from qualifiers, spool mass, source date, shipping and tax notes. Product figures are separate from the material summary.
Browse 6 products from 5 brands
3DXTechThermaX PEI 9085220.00 USD/kg
$440.00 / 2 kg spool = $220.00/kg; 1 kg spool $250.00, 250 g $80.00 ($320/kg), 3dxtech.com product catalogue, Aug 2026
Handle thermax-pei-9085.
Open product listing ↗- THERMAX PEI 9085 — product page (print recommendations) · 2026-08 · doc
- ThermaX PEI 9085 Technical Data Sheet v4 · 2026-08 · tds
| Density (g/cm³) | 1.34 (ISO 1183) |
|
|---|---|---|
| Nozzle temperature (°C) | 365–385 (TDS printed-specimen condition) |
|
| Bed temperature (°C) | 130–140 (TDS printed-specimen condition) |
|
| Tensile strength (XY) (MPa) | 54 (printed XY, ISO 527) |
|
| Young's modulus (MPa) | 2050 (printed XY, ISO 527) |
|
| Elongation at break (%) | 3 (printed XY, ISO 527) |
|
| Flexural strength (MPa) | 90 (printed XY, ISO 178) |
|
| Flexural modulus (MPa) | 2170 (printed XY, ISO 178) |
|
| HDT at 0.45 MPa (°C) | 158 (ISO 75, 0.45 MPa) |
|
| Glass transition (Tg) (°C) | 186 (DSC) |
|
| Flammability / UL 94 | UL 94 V-0 at 1.5 mm (base resin) |
|
3D4MakersPEI Ultem 9085 Filament269.97 USD/kg
EUR 499.95 / 2 kg spool = $269.97/kg at 1.08 USD/EUR, 3d4makers.com catalogue, Aug 2026
200 g to 2 kg, 1.75 and 2.85 mm.
Open product listing ↗- 3D4Makers PEI Ultem 9085 Filament product page · 2026-08 · vendor
| Density (g/cm³) | 1.34 |
|
|---|---|---|
| Diameter tolerance (± mm) | 0.05 at 1.75 mm; 0.10 at 2.85 mm, 95 % roundness |
|
| Nozzle temperature (°C) | 350–380 |
|
| Bed temperature (°C) | 120–160 |
|
| Drying temperature & time | 120 °C, minimum 4 h |
|
| Tensile strength (XY) (MPa) | 84 at yield |
|
| Young's modulus (MPa) | 3440 |
|
| Other impact data | Izod notched 115 J/m |
|
| Glass transition (Tg) (°C) | 186 |
|
FiberlogyPEI 9085298.30 USD/kg
$149.15 / 500 g spool = $298.30/kg excluding VAT, 3djake.com, Aug 2026
Natural, 1.75 mm.
Open product listing ↗- Fiberlogy PEI 9085 Natural, 1.75 mm / 500 g · 2026-08 · vendor
- Technical Data Sheet — Fiberlogy PEI 9085 · 2026-08 · tds
| Density (g/cm³) | 1.34 (ISO 1183) |
|
|---|---|---|
| Spool sizes & diameters | 1.75 mm, 0.5 kg |
|
| Diameter tolerance (± mm) | 0.02 |
|
| Nozzle temperature (°C) | 350–380 |
|
| Bed temperature (°C) | 160 |
|
| Recommended chamber temperature (°C) | Above 80 |
|
| Tensile strength (XY) (MPa) | 71 at break, 88 at yield (ISO 527) |
|
| Young's modulus (MPa) | 3050 (ISO 527) |
|
| Elongation at break (%) | 50 at break, 6.7 at yield (ISO 527) |
|
| Flexural strength (MPa) | 90 (ISO 178) |
|
| Flexural modulus (MPa) | 2750 (ISO 178) |
|
| Charpy impact, notched (kJ/m²) | 11 notched at 23 °C, reported against ISO 180 on the sheet |
|
| Other impact data | Izod notched 13 kJ/m² at 23 °C (ISO 180) |
|
| HDT at 1.8 MPa (°C) | 152 (ISO 75, 1.8 MPa) |
|
| Melting point / Vicat (°C) | Vicat 173 (ISO 306) |
|
| Flammability / UL 94 | FAA flammability <5 (FAR 25.853) |
|
KimyaPEI-9085321.30 USD/kg
EUR 148.75 incl. 19 % VAT / 500 g spool = EUR 297.50/kg = $321.30/kg at 1.08 USD/EUR, igo3d.com, Aug 2026
Natural, 2.85 mm.
Open product listing ↗- Kimya PEI-9085 Natural 2.85 mm 500 g · 2026-08 · vendor
- PEI-9085 KIMYA — Fiche technique / technical data sheet (DE) · 2026-08 · tds
| Density (g/cm³) | 1.34 (ISO 1183) |
|
|---|---|---|
| Diameter tolerance (± mm) | 0.1 at 1.75 mm and at 2.85 mm |
|
| Nozzle temperature (°C) | 350–380 |
|
| Bed temperature (°C) | 120–160 |
|
| Equilibrium moisture content at ~50 % RH (%) | 0.39 water absorption in 24 h (ISO 62) |
|
| Tensile strength (XY) (MPa) | 84 at yield, 74 at break (printed, ASTM D638) |
|
| Young's modulus (MPa) | 3440 (printed, ASTM D638) |
|
| Elongation at break (%) | 72 at break, 7 at yield (printed, ASTM D638) |
|
| Flexural strength (MPa) | 138 (printed, ASTM D790) |
|
| Flexural modulus (MPa) | 2920 (printed, ASTM D790) |
|
| Charpy impact, notched (kJ/m²) | 11 notched (printed, ISO 179/2C) |
|
| Other impact data | Izod notched 13 kJ/m² (printed, ISO 180/1A) |
|
| HDT at 1.8 MPa (°C) | 153 (ASTM D648, 1.8 MPa) |
|
| Glass transition (Tg) (°C) | 217 (ASTM E1356) |
|
| Melting point / Vicat (°C) | Vicat 173 (ISO 306, rate B/120) |
|
| Continuous service temperature (°C) | 170 maximum use temperature |
|
| Flammability / UL 94 | UL 94 V0 and FAR 25.853; limiting oxygen index 49 % (ASTM D2863) |
|
IEMAI 3DPEI 9085385.00 USD/kg
$385.00 / 1 kg spool, store.iemai3d.com, Aug 2026
Natural, 1.75 mm.
Open product listing ↗- IEMAI 3D PEI 9085 3D Printing Filament — store page · 2026-08 · vendor
- IEMAI 3D PEI 9085 Technical Data Sheet · 2022-11 · tds
| Density (g/cm³) | 1.34 (ISO 1183) |
|
|---|---|---|
| Tensile strength (XY) (MPa) | 54 (ISO 527; specimen type not stated) |
|
| Young's modulus (MPa) | 2050 (ISO 527; specimen type not stated) |
|
| Elongation at break (%) | 3 (ISO 527) |
|
| Flexural strength (MPa) | 90 (data sheet cites ISO 527 for the flexural figure) |
|
| Flexural modulus (MPa) | 2170 (data sheet cites ISO 527 for the flexural figure) |
|
| HDT at 0.45 MPa (°C) | 158 (ISO 75 at 0.45 MPa) |
|
| Glass transition (Tg) (°C) | 186 (DSC) |
|
| Flammability / UL 94 | UL 94 V-0 at 1.5 mm on the base resin |
|
3DXTechCarbonX PEI 9085+CF392.00 USD/kg
$98.00 / 250 g spool = $392.00/kg (500 g and 2 kg variants listed out of stock), 3dxtech.com product catalogue, Aug 2026
15 % high-modulus carbon fibre in ULTEM 9085. TDS specimens printed XY flat at 390 °C nozzle / 140 °C bed, 0.25 mm layer, 100 % infill.
Open product listing ↗- 3DXTech CarbonX PEI 9085+CF product page · 2026-08 · vendor
- CarbonX Carbon Fiber Ultem 9085 3D Printing Filament — Technical Data Sheet Rev 1.0 · 2026-08 · tds
| Density (g/cm³) | 1.39 (ISO 1183) | |
|---|---|---|
| Spool sizes & diameters | 1.75 mm; 250 g, 500 g and 2 kg |
|
| Nozzle temperature (°C) | 365–390 |
|
| Bed temperature (°C) | 140–160 |
|
| Drying temperature & time | 120 °C for 4 h |
|
| Tensile strength (XY) (MPa) | 93 at break (printed XY, ISO 527) | |
| Young's modulus (MPa) | 8600 (printed XY, ISO 527) | |
| Elongation at break (%) | 2 at break (printed XY, ISO 527) | |
| Flexural strength (MPa) | 120 (printed XY, ISO 178) | |
| Flexural modulus (MPa) | 8450 (printed XY, ISO 178) | |
| HDT at 0.45 MPa (°C) | 165 (ISO 75, 0.45 MPa) |
|
| Glass transition (Tg) (°C) | 186 (DSC) |
|
| Electrical & ESD properties | Surface resistance >10^9 Ω/sq (ASTM D257) |