Quadrant EPP Ketron® PEEK-HPV Polyetheretherketone; PTFE, Graphite, and Carbon Fiber Filled Bearing Grade
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 Properties | Metric | English | Comments | |
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| Specific Gravity | 1.44 g/cc | 0.052 lb/in³ | ASTM D792 | |
| Water Absorption | 0.05 % | 0.05 % | Immersion, 24hr; ASTM D570(2) | |
| Water Absorption at Saturation | 0.3 % | 0.3 % | Immersion; ASTM D570(2) | |
Mechanical Properties | ||||
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| Hardness, Rockwell M | 85 | 85 | ASTM D785 | |
| Tensile Strength, Ultimate | 75.8 MPa | 11000 psi | ASTM D638 | |
| Elongation at Break | 2 % | 2 % | ASTM D638 | |
| Tensile Modulus | 5.86 GPa | 850 ksi | ASTM D638 | |
| Flexural Modulus | 7.58 GPa | 1100 ksi | ASTM D790 | |
| Flexural Yield Strength | 190 MPa | 27500 psi | ASTM D790 | |
| Compressive Strength | 184 MPa | 26700 psi | 10% Def.; ASTM D695 | |
| Compressive Modulus | 6.89 GPa | 1000 ksi | ASTM D695 | |
| Shear Strength | 68.9 MPa | 10000 psi | ASTM D732 | |
| Coefficient of Friction | 0.21 | 0.21 | Dry vs. Steel; QTM55007 | |
| K (wear) Factor | 201 x 10-8 mm³/N-M | 100 x 10-10 in³-min/ft-lb-hr | QTM 55010 | |
| Limiting Pressure Velocity | 0.701 MPa-m/sec | 20000 psi-ft/min | 4:1 safety factor; QTM 55007 | |
| Izod Impact, Notched | 0.374 J/cm | 0.7 ft-lb/in | ASTM D256 Type A | |
Electrical Properties | ||||
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| Surface Resistivity per Square | Max 10000 ohm | Max 10000 ohm | EOS/ESD S11.11 | |
Thermal Properties | ||||
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| CTE, linear 68°F | 30.6 µm/m-°C | 17 µin/in-°F | (-40°F to 300°F); ASTM E831 | |
| Thermal Conductivity | 0.245 W/m-K | 1.7 BTU-in/hr-ft²-°F | ASTM F433 | |
| Melting Point | 340 °C | 644 °F | Crystalline, Peak; ASTM D3418 | |
| Maximum Service Temperature, Air | 250 °C | 482 °F | Long Term | |
| Deflection Temperature at 1.8 MPa (264 psi) | 195 °C | 383 °F | ASTM D648 | |
| Flammability, UL94 (Estimated Rating) | V-0 | V-0 | 1/8 inch | |
Qualitative Processing Properties | ||||
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| Compliance - FDA | Not Compliant | |||
| Machinability | 7 | 1-10, 1=Easier to Machine | ||
| Service in Alcohols | Acceptable | |||
| Service in Aliphatic Hydrocarbons | Acceptable | |||
| Service in Aromatic Hydrocarbons | Acceptable | |||
| Service in Chlorinated Solvents | Acceptable | |||
| Service in Ethers | Acceptable | |||
| Service in Ketones | Acceptable | |||
| Service in Strong Acids | Limited | |||
| Service in Strong Alkalies | Acceptable | |||
| Service in Sunlight | Acceptable | |||
| Service in Weak Acids | Acceptable | |||
| Service in Weak Alkalies | Acceptable | |||
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