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Polyethersulfone (PES)
Material Properties
Density: 1.37 g/cm3 (86 lb/ft3)
Dielectric Constant (Relative Permittivity): 3.5
Dielectric Strength (Breakdown Potential): 16 kV/mm (0.6 V/mil)
Elastic (Young's, Tensile) Modulus: 2.5 to 2.7 GPa (0.36 to 0.39 x 106 psi)
Electrical Resistivity Order of Magnitude: 14 to 16 10x Ω-m
Elongation at Break: 40 to 80 %
Flexural Modulus: 2.6 GPa (0.38 x 106 psi)
Flexural Strength: 129 MPa (19 x 103 psi)
Glass Transition Temperature: 220 °C (430 °F)
Heat Deflection Temperature: At 1.82 MPa (264 psi): 202 °C (396 °F)
Heat Deflection Temperature: At 455 kPa (66 psi): 210 °C (410 °F)
Limiting Oxygen Index (LOI): 36 %
Specific Heat Capacity: 1100 J/kg-K
Strength to Weight Ratio: 61 to 66 kN-m/kg
Tensile Strength: Ultimate (UTS): 84 to 90 MPa (12 to 13 x 103 psi)
Thermal Conductivity: 0.18 W/m-K
Thermal Expansion: 53 µm/m-K
Water Absorption: After 24 Hours: 0.37 %
See Also
Modern Plastics Handbook, Charles A. Harper (editor), 1999
Plastics Materials, 7th ed., J. A. Brydson, 1999
SPI Plastics Engineering Handbook of the Society of the Plastics Industry, Inc., 5th ed., Michael L. Berins (editor), 2000
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