3DXTech CarbonX PEI 9085+CF Carbon-Fiber ULTEM™ 9085 — Aerospace-Grade, FST-Rated, USA-Made
Carbon-Fiber ULTEM™ 9085 — Aerospace-Grade, FST-Rated, USA-Made
A USA-made PEI (polyetherimide) filament produced from genuine SABIC ULTEM™ 9085 resin reinforced with 15% high-modulus chopped carbon fiber — a purpose-built aerospace-grade material. ULTEM 9085 is FAA-approved for FST (Flame, Smoke & Toxicity) and meets FAR 25.853 and OSU 65/65; the carbon fiber adds exceptional stiffness, strength, and dimensional stability while keeping it printable. Full specifications →
Made in the USA — ships from Rev1. The 2 kg reel is a special-order (MOQ) size — call (248) 707-2950 for lead time and bulk pricing.
USA-made carbon-fiber ULTEM™ 9085, with a real datasheet behind it.
3DXTech compounds CarbonX PEI 9085+CF in Grand Rapids, Michigan at its 68,000 sq ft facility from genuine SABIC ULTEM™ 9085 resin, with published print and material data — no mystery filament. Rev1 Technologies is your authorized 3DXTech reseller and US support partner, Auburn Hills, Michigan.
Genuine ULTEM™ 9085 — now with carbon fiber.
ULTEM™ 9085 is one of the most trusted high-performance thermoplastics in aerospace — a flame-retardant PEI (polyetherimide) that is FAA-approved for FST (Flame, Smoke & Toxicity) and meets FAR 25.853 and OSU 65/65. CarbonX PEI 9085+CF starts with genuine SABIC ULTEM 9085 resin and adds 15% high-modulus chopped carbon fiber, so you get the same certified flame, smoke, and toxicity behavior with a large jump in stiffness, strength, and dimensional stability. 3DXTech compounds it in the USA into consistent, printable filament so you can print true aerospace-grade PEI components in-house — specifically formulated for its aerospace clients.
Aerospace flame ratings, plus carbon-fiber stiffness.
An 8600 MPa modulus on a genuine ULTEM 9085 base.
Carbon-fiber reinforcement gives CarbonX PEI 9085+CF an 8600 MPa tensile modulus — the stiffness engineers need to lightweight structural parts — while the ULTEM 9085 base keeps the flame, smoke, and toxicity behavior aerospace regulators require. Add a 165 °C heat-deflection temperature, a 186 °C glass transition, and low, stable dimensional response, and you have a material for interior and structural aircraft parts, tooling, and demanding end-use components — printed rather than machined from billet.
Stiffness and certified flame performance in one filament.
CarbonX PEI 9085+CF is built for structural, flame-rated aerospace applications. Numbers below are from the published TDS (Rev 1.0, ISO-tested, printed at 390 °C on a 0.4 mm nozzle, 100% infill).
High-modulus carbon fiber (ISO 527) — exceptional stiffness for structural, load-bearing parts.
Strength at break (ISO 527) — holds up under sustained mechanical load at temperature.
Rigid in bending (ISO 178) with an 8450 MPa flexural modulus — stiff, not floppy.
Deflection temperature at 0.45 MPa (ISO 75) — well above engineering nylons or PC.
DSC-measured Tg — a high service ceiling for a printable thermoplastic.
ULTEM 9085 base is FAA-approved for FST, meets FAR 25.853 and OSU 65/65, and is UL 94 V-0 rated.
A true high-temp printer — hot end, hot bed, hardened nozzle.
This is an advanced material: it needs a genuine high-temperature printer, ideally with an enclosed, heated chamber. These are 3DXTech's recommended starting conditions — dry the filament first, use a hardened nozzle, and print slowly for the best surface and strength.
Requires a genuine high-temp hotend rated for 390 °C — not a standard all-metal hotend.
A high-temperature heated bed with a suitable adhesive for reliable first-layer grip on PEI.
An enclosed, actively heated chamber controls warping and drives strong layer adhesion on larger parts.
Use a hardened-steel nozzle — carbon fiber is abrasive and wears out brass fast.
Dry thoroughly at 120 °C for ~4 hours; keep dry for the best surface finish and strength.
Slice at 0.25 mm layers or higher for the most consistent flow with the filled filament.
Certified end-use parts for aerospace and beyond.
Because it pairs certified flame, smoke, and toxicity behavior with high stiffness and dimensional stability, CarbonX PEI 9085+CF was formulated specifically for aerospace clients — and lands wherever regulated, high-temperature performance matters. These are the sectors this grade is built for.
Matte carbon-fiber black — 1.75 mm, three reel sizes.
CarbonX PEI 9085+CF ships in a single, purpose-built color: a deep matte carbon-fiber black. Carbon fiber is inherently black — there are no other color options for this material. It's available in 1.75 mm on 250 g, 500 g, and 2 kg reels; choose your reel size in the buy-box, or ask us about the 2 kg special-order size and bulk pricing. 3DXTech's 750 g-class reels are sized to fit popular automated material systems like the Bambu AMS, Creality CFS, and Anycubic ACE Pro — check the reel dimensions below against your printer.
Check the reel fits your printer.
Standard spool dimensions — confirm it fits your AMS or dry box.
3DXTech ships CarbonX on consistent, standard reels.
Before you buy, check the outer diameter, width, and center bore against your printer's spool holder, automated material system, or drybox. Open the full 3DXTech reel infographic for the exact dimensions of the 250 g, 500 g, and 2 kg spools.
View reel dimensions →Carbon-fiber ULTEM 9085 vs. unfilled ULTEM vs. carbon-fiber PEEK.
Approximate positioning among high-performance engineering filaments — confirm exact figures against each technical data sheet.
3DXTech's published property chart.
The quick-reference numbers, straight from the manufacturer — click the chart to enlarge it.
3DXTech publishes a property chart for CarbonX PEI 9085+CF so you can size it up fast. It's small on the page — click it to read the full-size version — and the same figures are in the readable specifications table below, with the complete mechanical, thermal, and print data.
| CarbonX PEI 9085+CF | Unfilled ULTEM 9085 | CarbonX PEEK+CF10 | |
|---|---|---|---|
| Stiffness | Very high (8600 MPa) | Moderate (~2900 MPa) | Very high (8100 MPa) |
| Heat deflection (0.45 MPa) | 165°C | ~153°C | 265°C |
| Flame / smoke / toxicity | FAA FST, FAR 25.853, OSU 65/65, UL 94 V-0 | FAA FST, FAR 25.853, OSU 65/65, UL 94 V-0 | Not FST-certified |
| Printer needs | High-temp hotend + hardened nozzle | High-temp hotend | High-temp hotend + heated chamber + hardened nozzle |
| Heated chamber | Recommended | Recommended | Required (70–150°C) |
| Surface finish | Matte carbon-fiber black | Natural / amber | Matte carbon-fiber black |
| Best for | Flame-rated structural aerospace parts | Certified interiors where max ductility matters | Extreme-temp structural end-use parts |
Qualitative comparison among high-performance filaments; confirm exact properties against each TDS. Prices vary by reel size and date.
3DXTech CarbonX PEI 9085+CF Technical Data
RESOURCES
Datasheet & Print Support
Everything you need to qualify and print CarbonX PEI 9085+CF.
WHY REV1 TECH
Authorized 3DXTech Reseller. Engineering-Materials Specialists.
Rev1 Technologies is an authorized 3DXTech reseller in Auburn Hills, MI, supplying genuine USA-made high-performance filament with real print support.
We help you pick the right high-performance polymer, confirm your printer can run it, and keep production going.
FAQ
3DXTech CarbonX PEI 9085+CF — Common Questions
Is this real ULTEM 9085?
Yes. CarbonX PEI 9085+CF is compounded from genuine SABIC ULTEM™ 9085 resin with 15% high-modulus carbon fiber added for stiffness. ULTEM 9085 is FAA-approved for FST (Flame, Smoke & Toxicity) and meets FAR 25.853 and OSU 65/65, so the material carries the flame ratings aerospace regulators require.
What kind of printer do I need?
A true high-temperature machine. It prints at 365–390°C, so you need a genuine high-temp hotend, a high-temperature heated bed (140–160°C), and a hardened-steel nozzle. An enclosed, actively heated chamber is strongly recommended for best results on larger parts. Standard desktop FDM printers cannot run this material.
Do I need a hardened nozzle?
Yes. The carbon fiber that gives this filament its stiffness is abrasive and will quickly wear out a standard brass nozzle. Use a hardened-steel or other abrasion-resistant nozzle, 0.4 mm minimum — 3DXTech specifically recommends it.
How should I dry it?
Dry the filament thoroughly at 120°C for about 4 hours before printing and keep it in a dry box. Like all PEI, it should be printed dry for the best surface finish, layer strength, and dimensional consistency.
How is it different from CarbonX PEEK+CF?
Both are ultra-high-performance carbon-fiber composites. PEI 9085+CF is built on ULTEM 9085, so its standout feature is certified aerospace flame, smoke, and toxicity behavior (FAA FST / UL 94 V-0), and it prints a little cooler (365–390°C) without a mandatory heated chamber. CF-PEEK trades that for an even higher 265°C heat-deflection temperature but requires an actively heated chamber. Tell us the requirement and we'll help you choose.
What sizes are available, and is it USA-made?
It ships matte black, 1.75 mm, on 250 g, 500 g, and 2 kg reels — the 2 kg is a special-order (MOQ) size. 3DXTech manufactures it at its 68,000 sq ft facility in Grand Rapids, Michigan, with published data and lot traceability.