Ultem 9085 is a pioneering thermoplastic that is strong, lightweight and flame-retardant (UL 94-V0 rated). With its superior mechanical performance and strength-to-weight ratio, Ultem 9085 is suitable for end-use production-grade components, particularly in the aerospace and automotive industries. Other applications including highly functional prototypes and production tools.

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Technical Specifications

Standard lead time Minimum of 5 working days, depending on part size, number of components and finishing degrees (offline & online orders)
Standard accuracy ± 0.15% (with lower limit on ± 0.2 mm)
Minimum wall thickness 1 mm
Layer thickness 0.25 mm
Maximum part dimensions 914 x 610 x 914 mm (offline orders)
406 x 355 x 406 mm (online orders)
Surface structure Unfinished parts typically have a rough surface but all kinds of fine finishes are possible.
FDM parts can be sandblasted, smoothed, colored/impregnated, painted and coated.


  Units ASTM# Range
Density g/cm³     1.34
Tensile Strength MPa  D638 72
Tensile Modulus MPa  D638   2220
Flexural Strength MPa  D790   115
Flexural Modulus MPa  D790  2507
Notched Izod Impact J/m  D256  106
Unnotched Izod Impact J/m  D256  613.8
Heat Deflection Temp (1.81 MPa)  °C D648  153
Elongation at Break     5.9
Oxygen Index D2863 49
Vertical Burn (Test a (60s), passes at) s FAR25.853 2
FAA Flammability (Method A/B)   FAR25.853 <5
OSU Peak Heat Release (5 minute test) kW/m2 FAR25.853 36
OSU Peak Heat Release (2 minute test) kW/min-/m2 FAR25.853 16
Certified Flame Retardancy   UL94 V-0 1.5 mm
Color     Tan or Black

Actual values may vary with build condition

Design Guidelines

We’ve put together our trusted tips, tricks and best practices to get you off to a solid start. If you’ve been wondering whether this material allows for interlocking parts or embossing, or if you just want to avoid common design mistakes, check out this handy design guide.

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Finishing Degrees

The right finish and color can transform a print into a product. Whether you’re looking for a functional finish like sealing or an aesthetic finish like soft-touch or high-gloss paint, take a look at your wide range of options here.

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How Does Fused Deposition Modeling Work?

FDM is a filament-based technology where a temperature-controlled head extrudes a thermoplastic material layer by layer onto a build platform. A support structure is created where needed and built in a non-water-soluble material.

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