ISO 9001:2015 Certified | Cage Code: 7L0f6
TYPICAL PROPERTIES of KETRON® HPV BEARING GRADES |
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| ASTM or UL test | Property | Ketron HPV Bearing Grade (extruded) |
Ketron HPV Bearing Grade (compression molded) |
| PHYSICAL | |||
| D792 | Density (lb/in³) (g/cm³) |
0.052 1.44 |
0.052 1.44 |
| D570 | Water Absorption, 24 hrs (%) | 0.05 | 0.07 |
| D570 | Water Absorption, Saturation (%) | 0.30 | – |
| MECHANICAL | |||
| D638 | Tensile Strength (psi) | 11,000 | 7,900 |
| D638 | Tensile Modulus (psi) | 850,000 | 530,000 |
| D638 | Tensile Elongation at Break (%) | 2 | 2 |
| D790 | Flexural Strength (psi) | 27,500 | 13,000 |
| D790 | Flexural Modulus (psi) | 1,100,000 | 700,000 |
| D695 | Compressive Strength (psi) | 20,000 | 20,000 |
| D695 | Compressive Modulus (psi) | 500,000 | – |
| D785 | Hardness, Rockwell | M85 | – |
| D256 | IZOD Impact Notched (ft-lb/in) | 0.7 | 1.0 |
| QTM55007 (* not ASTM) |
Coefficient of Friction, Dry vs. Steel | 0.21 | – |
| QTM55007 (* not ASTM) |
Limiting PV (psi-fpm) | 20,000 | 35,000 |
| QTM55010 (* not ASTM) |
“K” Wear Factor, (x 10-10 in3-min/lb-ft-hr) | 100 | – |
| THERMAL | |||
| D696 | Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
1.7 | 2.7 |
| D648 | Heat Deflection Temp (°F / °C) at 264 psi |
383 / 195 | 480 / 249 |
| D3418 | Melting Temp (°F / °C) | 644 / 340 | 644 / 340 |
| – | Max Operating Temp (°F / °C) | 482 / 250 | 480 / 249 |
| C177 | Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) |
1.7 5.9 |
– – |
| UL94 | Flammability Rating | V-0 | V-0 |
| ELECTRICAL | |||
| D149 | Dielectric Strength (V/mil) short time, 1/8″ thick | – | – |
| D150 | Dielectric Constant at 1 MHz | – | – |
| D150 | Dissipation Factor at 1 MHz | – | – |
| D257 | Surface Resistivity (ohm-square) at 50% RH | < 105 | < 106 |
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.