Lennite® UHMW-PE
(ultra high molecular weight polyethylene))
|
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Product Brochure (40kb - pdf)
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MSDS (267kb - pdf) |
Lennite UHMW-PE is a low friction
engineering plastic with excellent chemical resistance and
abrasive wear resistance. Lennite is widely used in conveyors,
packaging machinery, and food processing machinery since it is
inherently low friction, wears well, and is not abrasive to
mating parts. Westlake Plastics manufacturers Lennite with
extremely low levels of residual stress so that it can be
machined into complex parts with minimal deformation. It is
often used to line or replace abrasion-resistant steel plate in
bulk material handling applications when low friction, corrosion
resistance, and excellent wear properties are essential. Natural
(white) Lennite is FDA compliant for use in food processing
machinery.
The following physical property
information is based on typical values of the base ultra-high
molecular weight polyethylene resin. |
|
Mechanical Properties |
| |
Units |
ASTM Test |
Result |
| Hardness-Shore D |
- |
D2240 |
D61 |
| Izod Impact Strength Dbl Notched @
73°F |
ft•lbs/in |
D256 |
18 |
| Tensile Elongation @break |
% |
D638 |
>350.0 |
| Tensile Elongation @yield |
% |
D638 |
- |
| Tensile Strength @break |
psi |
D638 |
6,00 |
| Tensile Strength @yield |
psi |
D638 |
2,800 |
|
|
Thermal Properties |
| |
Units |
ASTM Test |
Result |
| Coefficient of Thermal Expansion |
in/in/°F |
D696 |
11.0x105 |
| Heat Deflection Temp @66 psi |
°F |
D6488 |
203 |
|
|
Electrical Properties |
| |
Units |
ASTM Test |
Result |
| Dielectric Constant @ 60Hz |
- |
D150 |
2.30 |
| Dielectric Strength |
kv/cm |
D149 |
900 |
| Dissipation Factor @50Hz |
- |
D150 |
0.00019 |
| Dissipation Factor @100Hz |
- |
D150 |
0.00025 |
| Volume Resistivity |
ohm·cm |
D257 |
>1016 |
|
|
Other Properties |
| |
Units |
ASTM Test |
Result |
| Specific Gravity |
- |
D792 |
0.930 |
| Water Absorption @24 hrs |
% |
D570 |
Nil |
|
|
| Applications
Include: |
| • Packaging and food processing
machinery components |
| • Star wheels and guide rails |
| • Idler sprockets |
| • Timing screws |
| • Hopper, chute, truck bed, and
railcar liners |
| • Conveyor components |
| • Bearings and bushings |
| • Under-chain wear strips |
| Advantages of
Lennite® UHMW-PE: |
| • Excellent abrasive wear resistance |
| • Low friction |
| • Promotes the flow of bulk material
(sand, soy beans, coals, etc.) |
| • Low moisture absorption |
| • High impact strength – even at
cold temperatures |
| • Excellent chemical resistance |
| • FDA and USDA compliant (natural
only), 3A Dairy, NSF Standards 51, 61 on specific resins |
| • Low cost |
| Manufacturing
Capabilities: |
| Sheet: 1/8” to 6” thick |
| Tube: 11/8” to 31/2” O.D. |
| Color/Grades: |
| Lennite – FDA compliant (natural) |
| Lennite II – non-FDA (natural, gray
and black) |
| Custom colors available in both FDA
compliant and non-FDA grades. |
| *In addition to our standard
capabilities, Westlake also has the ability to process custom
resins in various sizes and colors with some exceptions. |
| Lennite® is a Registered Trademark
of Westlake Plastics Co |
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