CarbonX PEI CF
CarbonX PEI CF

CarbonX PEI+CF Filament (ULTEM™ 9085)

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High Demand, Expect Lead Time


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Note: Due to popular demand, this item may have some lead time. Orders including this item will be shipped out when this product is available (~1-2 weeks from order placement). Please be patient with us as we work to replenish our inventory.

CarbonX™ CF PEI 9085 Aerospace is made using Sabic Ultem™ 9085 resin and 10% certified Toray T800 chopped carbon fiber. This custom formulation is an excellent printing aerospace-grade material specifically formulated for our aerospace clients.

Ultem™ 9085 is FAA-approved for FST applications (Flame/Smoke/Toxicity) and meets FAR 25.853 and OSU 65/65 standards. Toray T800 carbon fiber has a 5µm diameter (vs. 7µm for standard carbon fiber) and allows for more fibers per cc3 of material than when using standard carbon fiber. This allows for superior strength and stiffness while maintaining excellent dimensional stability and printability.

Benefits of Ultem™ PEI+CF [Aerospace] Include:

  • High thermal properties, Tg of 186°C and an HDT of 165°C
  • Inherent flame resistance due to Ultem™ 9085 base resin
  • Improved stiffness and strength for structural applications
  • Excellent dimensional stability – lower CTE, warp, and shrinkage vs unfilled grades
  • Resistance to a broad range of chemicals, include automotive fluids, fully halogenated hydrocarbons, alcohols, and aqueous solutions

    Typical Applications of PEI+CF Ultem 9085:


    The excellent balance of flame retardancy, low smoke emission, and low smoke toxicity of ULTEM PEI+CF makes it an excellent candidate for aerospace and aircraft applications. ULTEM offers low toxicity, smoke, and flame evolution. Ultem resins are found in applications such as personal service units, oxygen panels and components, ventilation system components, connectors, cable ducts, latches, hinges, food tray containers, door handles, and interior cladding parts.

    Automotive & Transportation:

    PEI+CF resins provide automotive manufacturers with a high performance, chemically resistant, thermally-stable, cost-effective alternative to metal that is strong enough to replace steel in some applications yet light enough to replace aluminum in others. For applications like transmission components, throttle bodies, ignition components, sensors, and thermostat housings.


    PEI+CF may be an excellent material choice for today’s demanding electrical applications, including connectors, MCB components like housings, shafts and levers, hard disk drive internals, FOUPs, BiTS, PCBs, MCCB internals, Plenum devices, LCD projector internals, fuel cell components, and many other applications.

    Filament Specifications:

    1.75mm and 2.85mm +/- 0.05mm in diameter

    Recommended Print Settings:

    • Extruder: 365-390°C
    • Bed Temp: 140-160°C
    • Nozzle: We currently recommend using one of our abrasion-resistant Vanadium™ Nozzles with a minimum diameter of 0.4mm.
    • Other: Ideal layer height is 60% of nozzle diameter. We do not recommend printing layers smaller than 0.2mm with carbon fiber reinforced filaments
    • Bed Prep: Nano Polymer Adhesive, 3DXTECH Polyimide Tape, or Ultem PEI tape gives us the best results
    • Heated Chamber: Recommended, a chamber helps reduce warping and improves layer adhesion, up to 180°C if equipped
    • Supports: ThermaX™ HTS High-Temp Support works ideal for complex, high-temp materials just like this.
    • Drying Instructions: 140°C for 4 hours

    ULTEM™ is a registered trademark of Sabic Innovative Plastics

    Abrasive Material

    This material is particularly abrasive among 3D printing filaments. Users may find standard brass nozzles are chewed through very quickly compared to standard wear and tear. When worn through, the nozzle diameter will widen inconsistently and the printer will experience extrusion issues.

    Because of this, it's strongly recommended this material be printed through a hardened steel nozzle rather than a softer metal, making our Vanadium Nozzles an excellent choice for this material.   

    Technical Data Sheets and Safety Data Sheets can be located here.

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