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EPM-2204U-W Ceramic-Filled
PEEK Specifications

904 West 6th Street, Shiner, Texas 77984 USA
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:


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EPM-2204U-W Ceramic-Filled PEEK Material (c) Boedeker Plastics 2007 EPM-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 )

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ASTM or UL test Property EPM-2204U-W
Ceramic-Filled PEEK
D792 Density (lb/in³)
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
- Thermal Conductivity

UL94 Flammability Rating -
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.
All values at 73°F (23°C) unless otherwise noted.
PEEK is a trademark of Victrex PLC.
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Boedeker Plastics, Inc.
904 West 6th Street, Shiner, Texas 77984 USA
USA TOLLFREE : 1-800-444-3485
Phone: 1-361-594-2941     Fax: 1-361-594-2349     E-Mail:

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