UHMW Polyethylene Material Information
Specifications
Physical Properties | Metric | English | Comments |
---|---|---|---|
Specific Gravity | 0.930 g/cc | 0.930 g/cc | ISO 1183 |
Moisture Absorption at Equilibrium | 0.01% | 0.01% | ISO 62 |
Water Absorption at Saturation | 0.50% | 0.50% | ISO 62 |
Mechanical Properties | Metric | English | Comments |
---|---|---|---|
Hardness, Shore D | >= 63 | >= 63 | ISO 868 |
Ball Indentation, Hardness | 38.0 MPa | 5510 psi | ISO 2039 |
Tensile Strength at Break | 40.0 MPa | 5800 psi | ISO 527 |
Tensile Strength, Yield | 20.0 MPa | 2900 psi | ISO 527 |
Elongation at Break | >= 50 % | >= 50 % | ISO 527 |
Elongation at Yield | 20% | 20% | ISO 527 |
Modulus of Elasticity | 0.760 GPa | 110 ksi | ISO 527 |
Flexural Strength | 27.0 Mpa | 3920 psi | ISO 178 |
Charpy Impact, Unnotched | NB | NB | ISO 179 |
Charpy Impact, Notched | <= 14.0 J/cm² | <= 66.6 ft-lb/in² | ISO 179 |
Electrical Properties | Metric | English | Comments |
---|---|---|---|
Volume Resistivity | >= 1.00e+13 ohm-cm | >= 1.00e+13 ohm-cm | IEC 60093 |
Surface Resistance | >= 1.00e+13 ohm | >= 1.00e+13 ohm | IEC 60093 |
Dielectric Constant | 3.0 @ Frequency 1.00e+6 Hz | ‘3.0 @ Frequency 1.00e+6 Hz | IEC 60250 |
Dielectric Strength | 45.0 kV/mm | 1140 kV/in | IEC 60243-1 |
Dielectric Loss Index | 0.0010 @ Frequency 1.00e+6 Hz | 0.0010 @ Frequency 1.00e+6 Hz | IEC 60250 |
Comparative Tracking Index | 600 V | 600 V | IEC 60112 |
Thermal Properties | Metric | English | Comments |
---|---|---|---|
CTE, Linear | 200 µm/m-°C | 111 µin/in-°F | ISO 11359 |
Thermal Conductivity | 0.410 W/m-K @ Temp 20.0 °C | 2.85 BTU-in/hr-ft²-°F @ Temp 68.0 °F | ISO 22007-4 |
Melting Point | 133 °C | 271 °F | DIN EN ISO 3146 |
Maximum Service Temperature, Air | 90.0 °C | 194 °F | UL 746B |
Deflection Temperature at 0.46 Mpa (66 psi) | 65.0 °C | 149 °F | ISO 75 |
Deflection Temperature at 1.8 Mpa (264 psi) | 42.0 °C | 108 °F | ISO 75 |
Vicat Softening Point | 80.0 °C | 176 °F | VST/B/50; ISO 306 |
Minimum Service Temperature, Air | -150 °C | -238 °F | UL 746B |
Flammability, UL94 | HB | HB | Test results without UL registration; UL 94 |
Oxygen Index | 18% | 18% | ASTM D2863 |
Compliance Properties | Metric | English | Comments |
---|---|---|---|
FDA | Yes | Yes | Physiological indifference |
Descriptive Properties | Metric | English | Comments |
---|---|---|---|
Acid Resistance | Yes | ||
Aromatic Resistance | Limited | ||
Bondability | No | ||
Chemical Resistance | DIN 8075 | ||
CKW Resistance | No | ||
Color | Natural | ||
Hydrocarbonate Resistance | Yes | ||
Hydroxide Resistance | Yes | ||
Ketone Resistance | Limited | ||
Physiological Indifference | Yes, EEC | ||
Resistance Against Hot Water | Limited | ||
UV Stabilization | No |
NOTE: The information in this data sheet is for design guidance only. Forming methods and specific geometry could affect properties.
Overview
UHMW Polyethylene features an unsurpassed combination of slickness, toughness and chemical resistance. It’s ideal for reducing wear and friction due to its specialized internal lubrication, reducing maintenance costs and energy consumption while extending equipment life. A proven choice for many applications due to it’s high durability, low friction and wear resistance. Also, UHMW Polyethylene is moisture repulsive and easy to fabricate. Material data provided by GEHR Plastics and Interstate Plastics.
Applications & Usage
- Gears
- Bearings
- Flanged Rollers
- Sprockets
- Belt Scrapers
- Chain Guides
- Conveyor Belt Components
- Assembly Line Rider Plates
- Food processing equipment
- Packing machinery such as chutes, hoppers and bin liners
- Fabricated components like wheels, rollers and pinion gears
Industries Using This Material
- Semiconductor
- Food
- Packaging