Material datasheet · Engineering thermoplastic (high-T amorphous)
PolyEtherImide (Sabic Ultem 1000)
UNS — · Extruded or compression-molded shapes; stress-relieved
Amber transparent high-temp plastic. FAR 25.853 cabin compliant, sterilizable.
Chemical composition
Nominal % by weight.
| Element | % by wt |
|---|---|
| Polyetherimide | — |
Applicable specifications
AMS / ASTM / MIL.
- ASTM D5205 (PEI0140)
- FAR 25.853 (cabin interiors)
- USP Class VI
- NSF-51
Machining guidance
CNC parameters and tooling.
Sharp polished carbide
Avoid stress concentrators in design — PEI is sensitive to molded-in stress. Machine fully, then anneal.
Stock & cost
Forms and Q1 2026 pricing.
- Color (Ultem 1000 amber, 2300/4000 series filled grades)
Typical applications
Where Ultem (PEI) is the right pick.
- Aircraft cabin interior parts
- Sterilizable medical instruments
- Semi wafer handlers
- Electrical insulators
Alternative materials
Substitute or upgrade options.
- PEEK (higher T, opaque)
- Polycarbonate (cheaper, lower T)
- PSU (similar Tg, less strength)
Digital Machine · Quick-Turn CNC · California
Machine your part in Ultem (PEI).
Production CNC milling and turning. Confirm material, inspection and documentation requirements when requesting a quote.
Keep exploring
Related tools & references
Speeds, feeds, tooling, and chip strategy.
SFM, RPM, and feed rate for this material.
Compare alloys by strength, weight, temperature, and cost.
Estimate part weight from Ultem (PEI) stock.
Aerospace specs that call out this alloy.