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GEHR Plastics PEI Polyetherimide

Category Polymer , Thermoplastic , Polyetherimide (PEI)
Manufacturer GEHR Plastics Inc
Trade Name
Port Shanghai port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF GEHR Plastics PEI Polyetherimide.pdf
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Material Notes:
Polyetherimide has a high mechanical strength in connection with a good chemical and heat resistance, good dimensional stability and creep resistance. Its unique torque strength permits the economical substitution of machining fabricated small parts from steel.Propertiesvery high strength and rigidityhigh torque strength and hardnesshigh thermostabilityhigh weather resistancehigh radiation resistanceself-extinguishinglimited resistance to stress cracksApplications include parts for electrical engineering, food industry, and aircraft construction.
Physical Properties Metric English Comments
Specific Gravity 1.27 g/cc
1.27 g/cc
ISO 1183
Water Absorption 0.25 %
0.25 %
ISO 62
Mechanical Properties Metric English Comments
Hardness, Rockwell M 109
109
Hardness, Shore D 82
82
DIN 53505
Tensile Strength at Break 85.0 MPa
12300 psi
ISO 527
Tensile Strength, Yield 105 MPa
15200 psi
ISO 527
Elongation at Break 60 %
60 %
ISO 527
Elongation at Yield 6.0 %
6.0 %
ISO 527
Modulus of Elasticity 3.20 GPa
464 ksi
ISO 527
Flexural Strength 145 MPa
21000 psi
3.5%; ISO 178
Charpy Impact Unnotched NB
NB
ISO 179
Charpy Impact, Notched 0.600 J/cm²
2.86 ft-lb/in²
ISO 179
Thermal Properties Metric English Comments
CTE, linear 56.0 µm/m-°C

@Temperature 20.0 °C
31.1 µin/in-°F

@Temperature 68.0 °F
DIN 53752
Thermal Conductivity 0.240 W/m-K
1.67 BTU-in/hr-ft²-°F
DIN 52612
Maximum Service Temperature, Air 170 °C
338 °F
Deflection Temperature at 0.46 MPa (66 psi) 200 °C
392 °F
ISO 75
Deflection Temperature at 1.8 MPa (264 psi) 190 °C
374 °F
ISO 75
Vicat Softening Point 211 °C
412 °F
VST/B/50; ISO 306
215 °C
419 °F
VST/A/50; ISO 306
Flammability, UL94 V-0
V-0
Electrical Properties Metric English Comments
Volume Resistivity >= 1.00e+13 ohm-cm
>= 1.00e+13 ohm-cm
VDE 0303
Surface Resistivity per Square >= 1.00e+15 ohm
>= 1.00e+15 ohm
VDE 0303
Dielectric Constant 2.9

@Frequency 1.00e+6 Hz
2.9

@Frequency 1.00e+6 Hz
DIN 53483
Dielectric Strength 33.0 kV/mm
838 kV/in
VDE 0303
Dielectric Loss Index 0.0013

@Frequency 1.00e+6 Hz
0.0013

@Frequency 1.00e+6 Hz
DIN 53483
Comparative Tracking Index 150 V
150 V
CTI; IEC 60112
Descriptive Properties Value Comments
Acid Resistance yes
Aromatic Resistance yes
Bondability yes
CKW Resistance limited
Color Natural
Hydrocarbonate Resistance yes
Hydroxide Resistance yes
Ketone Resistance yes
Physiological indifference according yes
Resistance Against Hot Water yes
UV Stabilization yes
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