PEI (Ultem) in CNC Machining
Polyetherimide (PEI), known commercially as Ultem, is a high-performance thermoplastic with mechanical strength, thermal stability, dimensional stability, and resistance to harsh chemicals. RapidDirect CNC machines amber and black PEI for medical, electrical, aerospace, and automotive components.
- High strength: PEI supports durable components in demanding applications.
- Heat resistance: The material retains performance in elevated-temperature environments.
- Dimensional stability: PEI helps maintain precision in custom parts.
- Electrical insulation: PEI is used for insulating components and housings.
Selection note: PEI combines strength and rigidity with high-temperature performance and electrical insulation, making it suitable for demanding custom parts.
PEI (Ultem) CNC Machining Capabilities
| Price | $$ |
|---|---|
| Lead time | About 6–10 days |
| Minimum wall thickness | Minimum 0.5 mm |
| Tolerances | ±0.005 in (±0.125 mm) |
| Maximum part size | 1200 × 500 × 150 mm |
| Available material | PEI Amber (Ultem 1000) and PEI Black (Ultem 1000) |
PEI (Ultem) Material Specifications
Mechanical Properties
| Tensile strength, yield | 110 MPa |
|---|---|
| Elongation at break | 20 % |
| Hardness | 120 Rockwell R |
| Heat deflection temperature | 200 °C |
Physical Properties
| Density | 1.27 g/cm³ |
|---|
PEI (Ultem) Manufacturing Facilities




PEI (Ultem) Parts & Applications




PEI (Ultem) CNC Machining FAQs
Learn about PEI (Ultem) applications, material properties, and cnc machining capabilities.