PEI
Polyetherimide
PEI, also known under the brand name Ultem, is an amorphous high performance thermoplastic with excellent dimensional stability and high temperature resistance up to 170 °C. The material is inherently flame retardant without additives and has good chemical resistance to hydrocarbons, alcohols and weak acids. PEI is biocompatible and approved for medical technical applications. The material is used in the aerospace industry, medical technical industry and electrical insulation. PEI has very low shrinkage and creep, which makes it suitable for precision parts.
6
Products 1,27 g/cm³
Density -40 to +170 °C
Temperature Machining
Properties
Temperature resistance
Continuous use up to 170 °C
Continuous use up to 170 °C
Dimensional stability
Very low shrinkage and creep
Very low shrinkage and creep
Flame retardant
Inherent flame retardancy without additives
Inherent flame retardancy without additives
Chemical resistance
Resistant to hydrocarbons, alcohols, and weak acids
Resistant to hydrocarbons, alcohols, and weak acids
Electrical insulation
Excellent dielectric strength
Excellent dielectric strength
Biocompatible
Approved for medical applications
Approved for medical applications
Technical data
| Density | 1,27 g/cm³ |
| Tensile strength | 85 MPa |
| E-modulus | 3 000 MPa |
| Impact strength (Charpy) | 5 kJ/m² |
| Water absorption | 0,25 % |
| Operating temperature | -40 to +170 °C |
Typical values. Actual properties may vary depending on the manufacturer and variant.
Applications
- Aerospace industry
- Medical instruments
- Electrical and electronic insulation
- Food industry
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