GENERAL DESCRIPTIONEPM-2204U-W is a newly developed proprietary grade of VICTREX® PEEK that has been blended with ceramic fillers to significantly improve its mechanical properties. This product has excellent dimensional stability and tolerance control across a broad range of temperature and humidity conditions. The EPM-2204U-W grade maintains impact strength, stiffness and minimum levels of creep.
When compared to some traditional materials such as polyamideimide (PAI) and other imidized polymers, this grade based on VICTREX® PEEK polymer has greater hydrolytic stability. And, when compared with ceramics, it is half the weight and offers greater impact resistance and toughness. It also has excellent processability and wear performance. Additional benefits include good dielectric properties for insulative applications. The EPM-2204U-W grade offers excellent machinability for tighter pitch and fine diameter holes as required to produce integrated circuit test sockets.
EPM-2204U-W Ceramic-Filled PEEK is available in 1/4" thru 1" thick 12" x 12" sheets and 1/4" thr 1" diameter rod (12" long max) and is a clean white in color.
( see also Standard PEEK PolyEtherEtherKetone Specifications )
TYPICAL PROPERTIES of EPM-2204U-W Ceramic-Filled PEEK
|ASTM or UL test||Property||EPM-2204U-W
|D570||Water Absorption, Saturation (%)||0.37|
|D638||Tensile Strength (psi / MPa)||13,000 / 90|
|D638||Tensile Modulus (psi / MPa)||650,000 / 4,480|
|D638||Tensile Elongation at Break (%)||>10|
|178||Flexural Strength (psi / MPa)||23,000 / 159|
|D790||Flexural Modulus (psi / MPa)||650,000 / 4,480|
|D695||Compressive Strength (psi / MPa)||17,000 / 117|
|D695||Compressive Modulus (psi / MPa)||-|
|D785||Hardness, Rockwell||M 103|
|D256||IZOD Notched Impact (ft-lb/in)||1.0|
|-||Coefficient of Linear Thermal Expansion
(x 10-5 in./in./°F)
(x 10-5 mm/mm/°K)
|D698||Heat Deflection Temp (°F / °C)
at 66 psi / 455 KPa
>500 / >260
|D3418||Melting Point (°F / °C)||645 / 341|
|D3418||Tg Glass Transition Temp (°F / °C)||290 / 143|
|D149||Dielectric Strength (V/mil) short time, 1/8" thick||400|
|D150||Dielectric Constant at 1 KHz||3.5|
|D150||Dissipation Factor at 1 KHz||<0.005|
|D257||Surface Resistivity (ohm-cm)||> 1013|
|D257||Volume Resistivity (ohm-cm)||1015|
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.PEEK is a trademark of Victrex PLC.
All values at 73°F (23°C) unless otherwise noted.