Aerospace-Grade Amber PEI (Ultem™) FDM Filament
We supply high-performance Amber PEI (Ultem™ 1010/9085 Equivalent) 3D Filament in 1.75mm and 2.85mm (±0.03mm tolerance). Featuring 𝑇𝑔 217°C, HDT 200°C, UL94 V-0, and FAA FAR 25.853 flame compliance, this high-temp FDM filament is engineered for aerospace end-parts, automotive ducting, and production tooling. Share your specs for a quick quote.
Product information
Published information supports preliminary product selection. Confirm the exact grade, dimensions, tolerances, documentation and application suitability with the quotation for your order.
Description
Amber PEI (Ultem™) 3D Filament represents the gold standard in high-temperature FDM additive manufacturing. Synthesized from Polyetherimide resin, this translucent amber filament delivers high tensile strength (80–100 MPa), superior Z-axis layer adhesion, and extreme dimensional stability.
With 𝑇𝑔 = 217℃ and continuous heat resistance up to 180°C, it meets strict aerospace Flame, Smoke, and Toxicity (FST) standards under FAA FAR 25.853 and UL94 V-0. Vacuum-sealed with desiccant, it enables direct 3D printing of functional aerospace ducts, composite layup tooling, and high-heat production jigs.
Property & Printing Datasheet Summary
| Parameter | Technical Value |
| Resin Grade & Color | Polyetherimide (Ultem 1010/9085 Equivalent) / Translucent Amber |
| Filament Diameters | 1.75 mm / 2.85 mm (Tolerance ± 0.03mm) |
| Glass Transition Temp (𝑇𝑔) | 217°C (HDT @ 1.8MPa: 200°C) |
| Flame Compliance | UL94 V-0 & FAA FAR 25.853 (Aerospace FST Compliant) |
| Z-Axis Strength / Tensile | 80 – 100 MPa (High Layer Adhesion) |
| Recommended Temps | Nozzle: 350–390°C / Bed: 140–160°C / Chamber: 90–150°C |
| Spool Sizes | 0.5 kg / 1.0 kg / 2.5 kg Spools (Vacuum Sealed) |
How this product is normally specified
This product is supplied as FDM filament spools for industrial high-temp 3D printers:
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Filament Diameter: 1.75 mm or 2.85 mm (±0.03mm tolerance)
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Spool Size: 0.5 kg, 1.0 kg, or 2.5 kg spools (vacuum sealed)
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Compliance: FAA FAR 25.853 aircraft interior FST certified
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Printer Hardware: High-temp nozzle (＞ 350℃) and heated chamber (＞ 90℃ )
Where this material can fit
Typical applications for Amber PEI (Ultem) 3D filament include:
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Aerospace & Aviation: Flame-retardant air ducting, cabin brackets, and radome parts
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Automotive & Motors: Under-hood sensor housings, intake manifolds, and high-temp brackets
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Production Tooling: High-temp thermoforming molds, composite layup tools, and CNC jigs
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Electronics & Semi: High-temp insulating enclosures, IC test sockets, and circuit carriers
What to confirm before ordering
To recommend the right PEI filament, please confirm:
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Required filament diameter (1.75mm vs. 2.85mm) and spool weight
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3D printer hardware specs (max nozzle, bed, and chamber temp)
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Target application (aerospace end-part, composite tooling, or housing)
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Trial quantity and estimated demand
Send us the information you have. We will review technical details before confirming the quotation.
Material overview
Understanding PEI (Polyetherimide)
Why engineers use it
- Good heat resistance and stiffness for structural and electrical parts.
- Stable dimensions and predictable processing in suitable equipment.
- Inherent flame, smoke and electrical performance for many technical applications.
- Available in natural amber and opaque or reinforced grades.
- Can be molded, machined or printed where the appropriate material form is available.
Limits to consider
- Some chemicals and stress-cracking agents require careful compatibility review.
- Moisture control before high-temperature processing is important.
- Continuous chemical or wear duty may favor PEEK or PPS.
- Reinforced grades change impact, surface and directional properties.
- Regulated uses require the correct documented grade, not a generic PEI designation.
Grades and product forms
Unfilled PEI emphasizes the base material’s thermal, electrical and dimensional balance. Glass-fiber grades improve stiffness and movement control but change toughness and surface finish. Medical, aerospace or food-contact projects must identify the exact documentation requirement before grade selection.
Performance points to review
| Evaluation area | Why it matters | Information to provide |
|---|---|---|
| Temperature behavior | Useful performance under elevated or changing temperature | Continuous and peak temperature, cycle length and time at load |
| Mechanical response | Strength and stiffness must match the real part geometry | Load direction, stress level, impact and fatigue expectations |
| Environmental resistance | Fluids, cleaning agents and atmosphere can change service life | Chemical name, concentration, temperature and exposure time |
| Dimensional control | Tight-tolerance parts depend on both material and processing | Finished dimensions, tolerances and assembly conditions |
| Electrical or insulation needs | Electrical requirements may influence grade and thickness | Voltage, dielectric, conductivity or insulation target |
These are engineering discussion points, not guaranteed property values. Final acceptance criteria should be agreed for the selected grade, process and order.
Typical application directions
These examples show where the material may be evaluated. They do not replace a suitability review for the finished component.
Preparing a high-temperature printing project
Provide filament diameter, printer model, nozzle and chamber capability, drying method, build geometry, support strategy and annealing plan. A high-performance filament cannot compensate for a printer that lacks the necessary thermal control.
Where the application is critical, define what a successful trial looks like before material is ordered: dimensions after processing, visual condition, mechanical response, assembly fit or another measurable result.
When another material may be better
PEEK may provide a larger performance margin in more severe heat or chemical service, while lower-cost engineering plastics may be sufficient for moderate conditions. PEI is often chosen when its specific balance of thermal, electrical and structural properties fits the part.
We recommend sharing the current material and the reason it is being reconsidered. Cost, processability, supply form and inspection burden belong in the decision alongside technical performance.
Information needed for an accurate quotation
A useful RFQ reduces follow-up questions and helps us distinguish between a material request and a finished-part requirement.
| Product form | Raw material, stock shape, semi-finished blank or completed part |
|---|---|
| Dimensions | Nominal size, finished size and tolerances |
| Quantity | Trial quantity, first order and estimated annual demand |
| Application | Part function and current material, if any |
| Operating temperature | Continuous range, peak temperature and cycle duration |
| Environment | Chemicals, gases, moisture, pressure, vacuum or outdoor exposure |
| Mechanical duty | Load, speed, impact, wear and mating components |
| Documentation | Drawing revision, inspection, traceability or compliance needs |
| Printing setup | Printer, nozzle, chamber, build plate, drying and annealing capability |
Frequently asked questions
Can I request a sample or trial quantity?
Trial quantities can be discussed according to product form and availability. Tell us what you need to prove during the trial, the intended process and the expected production quantity if the test succeeds.
Do you provide a data sheet or material documentation?
Available documentation depends on the selected material and supply route. List the documents required by engineering, purchasing or quality when you inquire so they can be checked before quotation.
Can the grade be selected from a product name alone?
No. Similar product names can cover different grades, colors, fillers and processes. Selection should be based on the finished application, environment and required property balance.
Can you supply custom dimensions or finished parts?
Custom sizes, blanks or finished parts can be reviewed where appropriate. A drawing with tolerances, quantity and material requirement is the best basis for quotation.
How should we evaluate an alternative to our current material?
Share the current grade, the part’s service conditions and the reason for changing it. A useful comparison looks at failure mode, processing, life, inspection and total project cost—not only a single property value.
What determines lead time?
Lead time depends on product form, grade, size, quantity, documentation, machining and current availability. Confirm the required delivery date and destination with the RFQ rather than assuming a standard schedule.
Send the drawing, application and quantity. We will use the project details to prepare a practical material and supply discussion.
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