25-50 usd/kg
Circularity potential
Very high
Strength
Medium
Production energy
Very high
Stiffness
Low
Embodied CO2
Very high
Density
Medium

Polyetherimide (PEI) is a high-performance, amorphous thermoplastic known for its exceptional mechanical strength, high temperature resistance, and outstanding electrical insulation properties. It is second only to PEEK in terms of mechanical performance at elevated temperatures. Commercially, it is best known under the trade name Ultem.

Polyetherimide
PEI
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Polyetherimide (PEI) is a high-performance, amorphous thermoplastic known for its exceptional mechanical strength, high temperature resistance, and outstanding electrical insulation properties. It is second only to PEEK in terms of mechanical performance at elevated temperatures. Commercially, it is best known under the trade name Ultem.

Design properties
Cost usd/kg
25-50
Carbon footprint kgCO2e/kg
10
Density kg/m3
1270
Tensile modulus GPa
3.3-3.6
Tensile strength MPa
80-125
Thermal
Electrical