Polyethersulfone (PES) 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®).
Radel® A PolyEtherSulfone or PES (also known as PolyArylEtherSulfone or PAES) provides a greater margin of performance in such areas as toughness in comparison with other plastics. High resistance to heat and combustibility, low smoke emission, and transparency are the combination of properties possessed by components made from PES. These, coupled with light weight, good impact resistance, dimensional stability, and chemical resistance, make PES useful in the electrical/electronics, aerospace/aircraft, automotive, and mass transit industries.
Radel® A is FDA approved and NSF and UL listed. It is available in amber transparent and opaque colors. Glass-fiber reinforced polyethersulfone grades 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 PES is opaque, grayish in color.
Emco Industrial Plastics doesn’t claim to represent all of the manufacturers or trade name products listed. This list is intended as a guide of typical materials available for purchase from Emco Industrial Plastics, Inc. For additional information, contact an Emco Industrial Plastics representative by filling out the form below.
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Polyethersulfone, Glass Filled
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Sheet, Rod, Film, Other
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| Type | Size | Length | Color |
|---|---|---|---|
| Sheet | .030″ – 4″ TH | Up to 24″ x 48″; CTS | Transparent Amber, White, Opaque colors |
| Rod | 3/8″ – 6″ DIA | Transparent Amber, White, Opaque colors | |
| Film | 0.001″ – 0.029″ TH | Up to 27″ wide roll width; Length CTS | Transparent Amber, White, Opaque colors |
| Other | Hex rod; Custom machined parts |
Give us your cut-to-size dimensions. We will precision-cut these plastics to your exact size. Additional sizes and colors available upon request.
| Physical Properties | Units | ASTM | Results |
|---|---|---|---|
| Density | lb/in³ | D792 | 0.057 |
| Water Absorption, 24 hrs | % | D570 | 0.39 |
| Mechanical Properties | Units | ASTM | Results |
|---|---|---|---|
| Tensile Strength @Yield | psi | D638 | 18900 |
| Tensile Modulus | psi | D638 | 825000 |
| Tensile Elongation @Yield | % | D638 | 1.9 |
| Flexural Strength | psi | D790 | 23500 |
| Flexural Modulus | psi | 400000 | 950000 |
| Compressive Strength | psi | D695 | 25600 |
| Compressive Modulus | psi | D695 | 119000 |
| Hardness, Rockwell R | D785 | R124/M80 | |
| IZOD Impact Strength Notched | ft-lb/in | D256 | 1.4 |
| Thermal Properties | Units | ASTM | Results |
|---|---|---|---|
| Coefficient of Linear Thermal Expansion | (x 10⁻⁵in./in./°F) | D256 | 1.7 |
| Heat Deflection Temp at 264 psi | °F | 420 | |
| Max Operating Temp | °F | 320 | |
| Thermal Conductivity | BTU-in/ft²-hr-°F | C177 | 1.35 |
| Flammability Rating | UL94 | V – O |
| Electrical Properties | Units | ASTM | Results |
|---|---|---|---|
| Dielectric Strength | V/mil | D149 | 440 |
| Dielectric Constant @ 1 KHz | D150 | 4.1 | |
| Dissipation Factor @ 1 KHz | D150 | 0.0018 | |
| Volume Resistivity, 50% RH | ohm-cm | D257 | >10¹⁶ |
NOTE: The property values presented above 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. All values at 73°F (23°C) unless otherwise noted.
NOTE: Several grades of this material are available. For additional information regarding this plastic, contact your Emco Industrial Plastics representative or call 973-862-4148.
