Ultra-High Molecular Weight Polyethylene (UHMW-PE) sheets are a superlative engineering material celebrated for their exceptional properties. UHMW-PE is a high-density polyethylene with an extremely high molecular weight, giving rise to its remarkable strength, impact resistance, and low friction coefficient. These sheets are valued in various industries for their exceptional abrasion resistance, outstanding chemical inertness, and low moisture absorption. UHMW-PE sheets find applications in the manufacturing of wear-resistant components, such as conveyor parts, chutes, and cutting boards. Their self-lubricating nature reduces friction and wear, making them an excellent choice for machinery and equipment where durability and reduced maintenance are paramount. These sheets offer reliable, long-lasting solutions across numerous industrial sectors.
Ultra-High Molecular Weight Polyethylene (UHMW-PE) rods are solid, cylindrical structures made from a specialized variant of high-density polyethylene. UHMW-PE's exceptional properties, including high molecular weight, result in remarkable strength, impact resistance, and low friction. These characteristics make UHMW-PE rods ideal for demanding applications where wear resistance and durability are paramount. They are extensively used in industries like manufacturing, food processing, and material handling, providing reliable and long-lasting solutions for components like bearings, bushings, and conveyor parts. UHMW-PE rods' low friction properties ensure smooth operation and reduce maintenance, while their chemical resistance and low moisture absorption further contribute to their versatility and popularity across various sectors.
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TYPICAL PROPERTIES of POLYETHYLENE |
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**** or UL test |
Property |
LDPE |
HDPE |
UHMW |
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PHYSICAL |
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D792 |
Density (lb/in³) (g/cm³) |
0.033 0.92 |
0.035 0.96 |
0.034 0.93 |
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D570 |
Water Absorption, 24 hrs (%) |
<0.01 |
<0.01 |
<0.01 |
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MECHANICAL |
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D638 |
Tensile Strength (psi) at 72°F |
1,400 |
4,600 |
5,800 |
|
D638 |
Tensile Strength (psi) at 150°F |
400 |
400 |
400 |
|
D638 |
Tensile Modulus (psi) |
57,000 |
200,000 |
80,000 |
|
D638 |
Tensile Elongation at Break (%) |
100 |
400 |
300 |
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D790 |
Flexural Strength at Yield (psi) |
1,500 |
4,600 |
3,500 |
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D790 |
Flexural Modulus (psi) |
29,000 |
174,000 |
88,000 |
|
D695 |
Compressive Strength (psi) |
1,400 |
4,600 |
3,000 |
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D695 |
Compressive Modulus (psi) |
54,000 |
100,000 |
80,000 |
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D732 |
Shear Strength (psi) |
- |
- |
3,000 |
|
D785 |
Hardness, Shore D |
D45 |
D69 |
D62-D66 |
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D256 |
IZOD Notched Impact (ft-lb/in) |
No Break |
1.3 |
No Break |
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THERMAL |
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D696 |
Coefficient of Linear Thermal Expansion (x 10-5 in./in./°F) |
- |
6 |
11 |
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D648 |
Heat Deflection Temp (°F / °C) at 66 psi at 264 psi |
120 / 48 116 / 46 |
170 / 76 176 / 80 |
203 / 95 180 / 82 |
|
D3418 |
Approx. Melting Temperature (°F / °C) |
244 / 118 |
260 / 125 |
275 / 136 |
|
- |
Max Operating Temp (°F / °C) |
160 / 71 |
180 / 82 |
180 / 82 |
|
C177 |
Thermal Conductivity (BTU-in/ft²-hr-°F) (x 10-4 cal/cm-sec-°C) |
- - |
- - |
2.84 10.0 |
|
UL94 |
Flammability Rating |
HB |
HB< |
HB |
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ELECTRICAL |
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|
D149 |
Dielectric Strength (V/mil) short time, 1/8" thick |
460-700 |
450-500 |
2300 |
|
D150 |
Dielectric Constant at 1 MHz |
2.25- 2.30 |
2.30- 2.35 |
2.30- 2.35 |
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D150 |
Dissipation Factor at 1 kHz |
0.0002 |
0.0002 |
0.0005 |
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D257 |
Surface Resistivity (ohm/square) at 50% RH |
> 1015 |
> 1015 |
> 1015 |
|
D495 |
Arc Resistance (sec) |
135-160 |
200-250 |
250-350 |