Polyetherimide (PEI) is a high-temperature plastic valued for its strength, rigidity, and thermal reliability. It maintains structural integrity under stress and supports fine machining for both detailed and simple aerospace designs requiring precise dimensional control and finishes.
AeroCNCParts produces precision Ultem components for aerospace projects under certified systems. Using advanced multi-axis machining centers, we achieve ±0.005 mm accuracy validated through CMM analysis. Each manufacturing stage is recorded and inspected to guarantee repeatable quality and compliance.
self-extinguishing
Creates a clear, glossy finish.
Adds a thick, wear-resistant protective layer.
Cleans surface; boosts corrosion resistance.
Retains its strength and geometry even after prolonged high-temperature exposure, without exhibiting creep or warping.
Offers minimal expansion, ensuring perfect fits in complex aerospace assemblies.
Meets FAR 25.853 fire, smoke, and toxicity requirements used for cabin interiors.
Provides stable dielectric insulation and low conductivity for sensors and avionics.
High-level comparison of common aerospace Ultem (PEI). Always align to your project spec.
| Grade | Strength | Corrosion Resistance | Dimensional Stability | Machinability | Note |
|---|---|---|---|---|---|
| Ultem 1000 (Unfilled) | High | Excellent | Excellent | Excellent | Standard grade suited for transparent panels, housings, and insulation parts |
| Ultem 2300 (30 % Glass-Filled) | Very High | Very Good | Very High | Good | Reinforced formulation delivering rigidity for load-bearing aircraft components. |
| Ultem 2200 (20 % Glass-Filled) | High | Very Good | High | Good | Balanced variant for clips, brackets, and structural fittings requiring stiffness and machinability. |
Full material traceability, 100% inspection, AS9100-ready process
