VoluFab

ULTEM 9085

Aerospace-grade PEI blend for FDM with inherent flame resistance and high strength-to-weight — used for flight-critical and interior brackets certified by aviation programs.

Get an instant quote Lead time: 5-7 business days for most FDM builds

Key properties

Key properties
Heat deflection temperature ~153°C (0.45 MPa)
UL94 V-0 flame rating (self-extinguishing)
Tensile strength ~71-75 MPa (FDM printed)
Low smoke and heat release per FAR 25.853
Excellent chemical and hydrolysis resistance
High strength-to-weight ratio

Common applications

  • Aircraft interior brackets and ducts
  • Air ducts and ventilation parts
  • Drone and UAV structural components
  • Rail and mass-transit interior parts
  • High-temperature tooling
  • Flame-critical enclosures

Processes available

  • FDM 3D printing (large-format printers)

Surface finishes

  • As printed
  • Sanded
  • Sealed (epoxy or paint for smoother flow)

Cost & pricing

Premium material — expect several times the cost of ABS; justified for flame-rated, high-heat parts.

Tolerance: ±0.3-0.5mm on FDM parts; account for layer-line geometry.

Frequently asked questions

Why ULTEM 9085 instead of standard FDM plastics?
It is the FDM material with aviation-grade flame, smoke and toxicity ratings plus high continuous-use temperature — for certified and heat-critical parts.
Is ULTEM 9085 machinable?
Yes, printed parts can be CNC machined to tighten tolerances and clean up datum surfaces before installation.

Frequently asked questions

How long does production take?

Lead time depends on the process and quantity — 3D printing typically ships in 2–3 business days, CNC machining in 3–5, and injection molding in 10–15 after tooling. You'll see the exact lead time on every quote.

What is the standard tolerance?

CNC-machined parts are held to ±0.1 mm as standard, with ±0.05 mm achievable on critical features. 3D-printed parts are typically ±0.2–0.3 mm. Add your critical dimensions in the notes field.

What is the minimum order quantity?

There is no minimum order — we produce single prototype parts as easily as large production runs. Quantity discounts start from around 10–25 pieces.

What surface finishes are available?

A wide range of finishes is available locally, including as-machined/printed, bead blasting, anodizing (clear, black, gold), powder coating, painting and polishing.

How do I get a quote?

Upload your CAD file (STL, STEP, IGES or 3MF) to the instant-quote tool — the VoluFab pricing engine returns a real quote in seconds, with DFM feedback included.

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