PEI Ultem 9085 Filament.
A polyetherimide whose raw material is approved for aerospace FAR 25.853 and OSU 55/55, and for rail EN 45545 R6-HL3. UL 94 V-0 rated, with the strength-to-weight ratio those industries ask for. read further
- High thermal properties
- Good chemical resistance
- High mechanical resistance
For custom specs, technical validation, or bulk pricing. Speak with an engineer before you order.
Freshly produced on demand and typically shipped within 3 working days.
ULTEM 9085 PEI filament: the grade with aerospace and rail paperwork.
| Property | Condition | Value | Test method |
|---|---|---|---|
| Density | 1.34 g/cm3 | ISO 1183 | |
| Moisture Absorption | 23 ºC, 50% RH, 24 h | 0.1% | ISO 62-4 |
| Moisture Absorption | 23 ºC, 50% RH, equilibrium | 0.4% | ISO 62-4 |
| Water Absorption | 23 ºC, 24 h | 0.15% | ISO 62-1 |
| Water Absorption | 23 ºC, saturated | 0.7% | ISO 62-1 |
| Melt Volume Rate | 340 ºC/5.0 kg | 40 cm3/10 min | ISO 1133 |
| Melt Flow Rate | 295 ºC/6.6 kgf | 8.9 g/10 min | ASTM D1238 |
| Mold Shrinkage-Flow | 3.2 mm | 0.5 to 0.7 % | Supplier method |
| Specific Gravity | 1.34 | ASTM D792 |
| Property | Condition | Value | Test method |
|---|---|---|---|
| Tensile Stress | Yield, 50 mm/min | 94 MPa | ISO 527 |
| Tensile Strain | Yield, 50 mm/min | 6.7% | ISO 527 |
| Tensile Strain | Break, 50 mm/min | 70% | ISO 527 |
| Tensile Stress | Yield, 5 mm/min | 88 MPa | ISO 527 |
| Tensile Strain | Yield, 5 mm/min | 6.5% | ISO 527 |
| Tensile Strain | Break, 5 mm/min | 70% | ISO 527 |
| Tensile modulus | 1 mm/min | 2850 MPa | ISO 527 |
| Flexural Stress | Yield, 2 mm/min | 129 MPa | ISO 178 |
| Flexural Modulus | 2 mm/min | 2700 MPa | ISO 178 |
| Hardness, Rockwell M | 115 | ISO 2039-2 | |
| Unnotched Izod Impact Strength | 23 ºC, 80x10x4 | No Break | ISO 180/1U |
| Unnotched Izod Impact Strength | -30 ºC, 80x10x4 | No Break | ISO 180/1U |
| Notched Izod Impact Strength | 23 ºC, 80x10x4 | 10 kJ/m2 | ISO 180/1A |
| Notched Izod Impact Strength | -30 ºC, 80x10x4 | 8 kJ/m2 | ISO 180/1A |
| Notched Izod Impact Strength | 23 ºC | 115 J/m | ASTM D256 |
| Notched Izod Impact Strength | -30 ºC | 65 J/m | ASTM D256 |
| Unnotched Charpy Impact Strength | 23 ºC, edgewise, 80x10x4, span 62 mm | No Break | ISO 179/1eU |
| Unnotched Charpy Impact Strength | -30 ºC, edgewise, 80x10x4, span 62 mm | No Break | ISO 179/1eU |
| Charpy notched impact strength | V-notch, 23 ºC, edgewise, 80x10x4, span 62 mm | 10 kJ/m2 | ISO 179/1eA |
| Charpy notched impact strength | V-notch, -30 ºC, edgewise, 80x10x4, span 62 mm | 8 kJ/m2 | ISO 179/1eA |
| Tensile Stress | Yield, Type I, 50 mm/min | 94 MPa | ASTM D638 |
| Tensile Strain | Yield, Type I, 50 mm/min | 7% | ASTM D638 |
| Tensile Strain | Break, Type I, 50 mm/min | 70% | ASTM D638 |
| Tensile Stress | Yield, Type I, 5 mm/min | 86 MPa | ASTM D638 |
| Tensile Strain | Yield, Type I, 5 mm/min | 7% | ASTM D638 |
| Tensile Strain | Break, Type I, 5 mm/min | 70% | ASTM D638 |
| Tensile modulus | 5 mm/min | 3000 MPa | ASTM D638 |
| Flexural Stress | Yield, 1.3 mm/min, 50 mm span | 138 MPa | ASTM D790 |
| Flexural Modulus | 1.3 mm/min, 50 mm span | 2800 MPa | ASTM D790 |
| Unnotched Izod Impact Strength | 23 ºC | No Break | ASTM D4812 |
| Unnotched Izod Impact Strength | -30 ºC | No Break | ASTM D4812 |
| Property | Condition | Value | Test method |
|---|---|---|---|
| Heat Deflection Temperature | 0.45 MPa, flatwise, 80x10x4, span 64 mm | 169 ºC | ISO 75/Bf |
| Heat Deflection Temperature | 1.8 MPa, flatwise, 80x10x4, span 64 mm | 152 ºC | ISO 75/Af |
| Heat Deflection Temperature | 0.45 MPa, 3.2 mm, unannealed | 169 ºC | ASTM D648 |
| Heat Deflection Temperature | 1.82 MPa, 3.2 mm, unannealed | 153 ºC | ASTM D648 |
| Vicat Softening Temperature | B50 | 173 ºC | ISO 306 |
| Vicat Softening Temperature | B120 | 175 ºC | ISO 306 |
| CLTE | Flow, -30 ºC to 80 ºC | 6.5E-5 1/ºC | ISO 11359-2 |
| CLTE | Transverse, -30 ºC to 80 ºC | 7.0E-5 1/ºC | ISO 11359-2 |
| CLTE | Flow, -30 ºC to 80 ºC, ASTM | 6.5E-5 1/ºC | ASTM E831 |
| CLTE | Transverse, -30 ºC to 80 ºC, ASTM | 7.0E-5 1/ºC | ASTM E831 |
| Property | Condition | Value | Test method |
|---|---|---|---|
| FAA Flammability | FAR 25.853 A/B | < 5 | FAR 25.853 |
| OSU total heat release | 2 minute test | ≤55 kW-min/m2 | FAR 25.853 |
| OSU Peak Heat Release Rate | 5 minute test | ≤55 kW/m2 | FAR 25.853 |
| Vertical Burn | 60 s, Type A at 2 mm | PASS | FAR 25.853 |
| Oxygen Index | 49% | ASTM D2863 |
A closed, hot machine and a four-hour bake.
| Parameter | Value |
|---|---|
| Nozzle temperature | 350 to 380 °C |
| Heated bed temperature | 120 to 160 °C |
| Print speed | 20 to 35 mm/s |
| Drying recommendations | 120 °C, minimum 4 hours |
| Adhesion | Magigoo HT on glass or a PEI sheet |
| Filament weight | Spool | Empty weight |
|---|---|---|
| 200 to 750 g | RS 200 GH2L PC | 243 g |
| 1000 g | RS 200 KDL PC | 256 g |
| 2000 g | RS300/15GHL PC | 618 g |
Precision-engineered consistency.
Consistent prints start with a uniform filament shape. We continuously monitor diameter and roundness during production. When filament varies in size or loses its round profile, material flow becomes erratic. This causes under-extrusion and weak layer bonds.
Our manufacturing process keeps the cross-section stable across the full spool. Your printer receives a steady volume of material without pressure drops in the nozzle. You get predictable extrusion on every job, so with PEI Ultem 9085 you can focus on your design, not your material.
Sealed at the source. Never touched by water.*
Unlike manufacturers who cool filament in a water bath, our filament never touches water during production. Moisture inside the material creates bubbles and weakens layer bonding during printing. Water-free production keeps extrusion consistent and bubble-free.
Sealed and ready to print.
We produce on demand. Every spool is vacuum-sealed immediately after extrusion, so it reaches you dry. This process keeps every spool of PEI Ultem 9085 ready to print out of the box.
* At times of high demand, and for some variants, production may run on a conventional water-cooled line. Contact us before ordering if you require material produced with our water-free process.
Vacuum-sealed on the production line, before it ever leaves the machine.
Precision you can track. From pellet to part.
We produce every spool on demand in our own facility. This gives us direct oversight that mass-produced stock lacks. Your spool comes from a fresh, identifiable batch rather than long-term warehouse inventory. We document the production trail for every run.
Documented, not just shipped.
We keep the production logs for every batch we make. On request, we link a Certificate of Analysis and Technical Data Sheet to your specific batch. You get clear data for your spool of PEI Ultem 9085.
Dutch engineering for parts that define the future.
At 3D4M, we develop and manufacture high-performance thermoplastic filaments for demanding applications across aerospace, defence, semiconductor, automotive, medical research, and industrial manufacturing. We work with engineers, researchers, and manufacturers who need materials that go beyond standard specifications.
Our engineering starts with the machines themselves. We design and build our own extrusion lines around our patented extrusion process, combining material expertise with technology developed in-house. For moisture-sensitive polymers, our air-cooling technology offers a water-free cooling option, allowing us to tailor the production process to the material.
Our production facility is built on a single, uncompromising principle: control. From our extrusion technology to precise diameter monitoring and vacuum-sealed packaging, we control every stage to deliver consistent filament with batch traceability.
Trusted by global leaders
Supporting over 100 universities alongside global industry leaders, we have become a trusted partner to advanced research labs and manufacturers worldwide. We bring together material expertise and Dutch engineering to help turn ambitious ideas into reliable, high-performance parts.
3D4M headquarters, Haarlem, the Netherlands.
Validating this material for your application?
The leap to a high-performance polymer can be complex. Speak directly with one of our material engineers about your printer setup, target specifications, and material performance. We are here to help you de-risk your validation phase.
Specify your specs. We'll start your batch.
Experience the benefits of freshly extruded, water-free filament. Select your required diameter and spool weight in the order panel to initiate our on-demand production process. We ship worldwide, vacuum-sealed and ready.
Place your order