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Quadrant EPP Ketron PEEK-HPV Polyetheretherketone; PTFE, Graphite, and Carbon Fiber Filled Bearing Grade

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Subcategory: Filled/Reinforced Thermoplastic; Polyetheretherketone (PEEK); Polyketone; Polymer; Thermoplastic

Material Notes:
This bearing grade of extruded Ketron PEEK offers the lowest coefficient of friction and best machinability of all Ketron grades. It is ideal for low wear, high PV parts that require chemical resistance.

Data provided by Quadrant Engineering Plastic Products.

Physical PropertiesMetricEnglishComments
Specific Gravity1.44 g/cc0.052 lb/in ASTM D792
Water Absorption0.05 %0.05 % Immersion, 24hr; ASTM D570(2)
Water Absorption at Saturation0.3 %0.3 % Immersion; ASTM D570(2)

Mechanical Properties
Hardness, Rockwell M8585 ASTM D785
Tensile Strength, Ultimate75.8 MPa11000 psi ASTM D638
Elongation at Break2 %2 % ASTM D638
Tensile Modulus5.86 GPa850 ksi ASTM D638
Flexural Modulus7.58 GPa1100 ksi ASTM D790
Flexural Yield Strength190 MPa27500 psi ASTM D790
Compressive Strength184 MPa26700 psi 10% Def.; ASTM D695
Compressive Modulus6.89 GPa1000 ksi ASTM D695
Shear Strength68.9 MPa10000 psi ASTM D732
Coefficient of Friction0.210.21 Dry vs. Steel; QTM55007
K (wear) Factor201 x 10-8 mm/N-M100 x 10-10 in-min/ft-lb-hr QTM 55010
Limiting Pressure Velocity0.701 MPa-m/sec20000 psi-ft/min 4:1 safety factor; QTM 55007
Izod Impact, Notched0.374 J/cm0.7 ft-lb/in ASTM D256 Type A

Electrical Properties
Surface Resistivity per SquareMax 10000 ohmMax 10000 ohm EOS/ESD S11.11

Thermal Properties
CTE, linear 68F30.6 m/m-C17 in/in-F (-40F to 300F); ASTM E831
Thermal Conductivity0.245 W/m-K1.7 BTU-in/hr-ft-F ASTM F433
Melting Point340 C644 F Crystalline, Peak; ASTM D3418
Maximum Service Temperature, Air250 C482 F Long Term
Deflection Temperature at 1.8 MPa (264 psi)195 C383 F ASTM D648
Flammability, UL94 (Estimated Rating)V-0V-0 1/8 inch

Qualitative Processing Properties
Compliance - FDANot Compliant 
Machinability7 1-10, 1=Easier to Machine
Service in AlcoholsAcceptable 
Service in Aliphatic HydrocarbonsAcceptable 
Service in Aromatic HydrocarbonsAcceptable 
Service in Chlorinated SolventsAcceptable 
Service in EthersAcceptable 
Service in KetonesAcceptable 
Service in Strong AcidsLimited 
Service in Strong AlkaliesAcceptable 
Service in SunlightAcceptable 
Service in Weak AcidsAcceptable 
Service in Weak AlkaliesAcceptable 

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistant format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to our disclaimer and terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into the Quadrant Engineering Plastics Products database.

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