Full Name
Polyetherimide (PEI)
Polyetherimide (PEI) is an amorphous, amber-to-transparent thermoplastic with characteristics similar to the related plastic PEEK. Relative to PEEK, PEI is cheaper, but is lower in impact strength and usable temperature.
Density
1.38 g/cc
Tensile Strength, Yield
115 MPa
Modulus of Elasticity
8.70 GPa
Surface Resistance
2.02e+15 ohm
Dielectric Strength
26.1 kV/mm
Hot Wire Ignition
86.6 s
Specific Heat Capacity
1.42 J/g-°C
Max. Service Temperature, Air
169 °C
Tensile Strength, Ultimate
129 MPa
Elongation at Break
19.1 %
Electrical Resistivity
2.64e+16 ohm-cm
Dielectric Constant
3.25
Arc Resistance
122 sec
CTE, linear
36.3 µm/m-°C
Thermal Conductivity
0.340 W/m-K
Flammability, UL94
HB - 5VA