GENERAL PROPERTIESRadel® A PESU (Polyethersulfone) is a high temperature amorphous thermoplastic offering a superior combination of better chemical resistance and higher dry heat capability than polysulfone (Udel®) or polyetherimide (Ultem®). Polyethersulfone may also be referred to as Polyarylsulfone.
Radel® A PolyEtherSulfone provides a greater margin of performance in such areas as toughness in comparison with other plastics. It has a high heat deflection temperature of 400°F (204°C), good hydrolytic stability, and chemical resistance to many commonly used acids and bases.
Radel® A is available in transparent, opaque as well as filled grades. It is used for lighting fixtures, electrical and electronic components, surgical and medical devices, chemical process equipment, automotive and food service components. Radel® A is FDA approved and NSF and UL listed. It is available in amber transparent and opaque colors.
Glass fiber reinforced polyethersulfone compounds are also available. The addition of glass fibers increases the rigidity, tensile strength, creep resistance, dimensional stability, and chemical resistance of the material. Glass filled materials are opaque, grayish in color. Properties for the 30% glass filled grade are shown below for comparison.
TYPICAL PROPERTIES of RADEL A POLYETHERSULFONE
|ASTM or UL test||Property||unfilled
|D570||Water Absorption, 24 hrs (%)||0.54||0.39|
|D638||Tensile Strength (psi)||12,200||18,900|
|D638||Tensile Modulus (psi)||385,000||825,000|
|D638||Tensile Elongation at Yield (%)||6.5||1.9|
|D790||Flexural Strength (psi)||16,100||23,500|
|D790||Flexural Modulus (psi)||420,000||950,000|
|D695||Compressive Strength (psi)||14,500||25,600|
|D695||Compressive Modulus (psi)||388,00||1,119,000|
|D256||IZOD Notched Impact (ft-lb/in)||1.6||1.4|
|D696||Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
|D648||Heat Deflection Temp (°F / °C)
at 264 psi
400 / 204
420 / 215
|D3418||Melting Temp (°F / °C)||- / -||- / -|
|-||Max Operating Temp (°F / °C)||320 / 160||320 / 160|
(x 10-4 cal/cm-sec-°C)
|D149||Dielectric Strength (V/mil) short time, 1/8" thick||380||440|
|D150||Dielectric Constant at 1 KHz||3.5||4.1|
|D150||Dissipation Factor at 1 KHz||0.0022||0.0018|
|D257||Volume Resistivity (ohm-cm)at 50% RH||1.7 x 1015||> 1016|
NOTE: The information contained herein are typical values intended for reference and comparison purposes only. They should NOT be used as a basis for design specifications or quality control. Contact us for manufacturers' complete material property datasheets.RADEL and UDEL are registered trademarks of Solvay Advanced Polymers.
All values at 73°F (23°C) unless otherwise noted.