Polyethylene - Medium Density ( MDPE )
Material Information
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Chemical Resistance
| Acids - concentrated |
Good-Fair |
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| Acids - dilute |
Good |
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| Alcohols |
Good |
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| Alkalis |
Good |
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| Aromatic hydrocarbons |
Fair |
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| Greases and Oils |
Good-Fair |
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| Halogenated Hydrocarbons |
Fair-Poor |
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| Halogens |
Fair-Poor |
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| Ketones |
Good-Fair |
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Electrical Properties
| Dielectric constant @1MHz |
2.3-2.4 |
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| Dielectric strength ( kV mm-1 ) |
22 |
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| Dissipation factor @ 1MHz |
1-10 x 10-4 |
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| Surface resistivity ( Ohm/sq ) |
1013 |
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| Volume resistivity ( Ohmcm ) |
1015-1018 |
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Mechanical Properties
| Elongation at break ( % ) |
100-150 |
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| Hardness - Rockwell |
D50 - Shore |
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| Poisson's ratio |
0.46 |
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| Tensile strength ( MPa ) |
12-19 |
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Physical Properties
| Density ( g cm-3 ) |
0.935 |
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| Flammability |
HB |
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| Limiting oxygen index ( % ) |
17 |
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| Radiation resistance |
Fair |
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| Resistance to Ultra-violet |
Poor |
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| Water absorption - equilibrium ( % ) |
<0.01 |
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Thermal Properties
| Coefficient of thermal expansion ( x10-6 K-1 ) |
100-200 |
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| Heat-deflection temperature - 0.45MPa ( C ) |
62 |
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| Heat-deflection temperature - 1.8MPa ( C ) |
43 |
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| Lower working temperature ( C ) |
-118 |
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| Specific heat ( J K-1 kg-1 ) |
1900 |
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| Thermal conductivity @0.45-0.52C ( W m-1 K-1 ) |
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Buy Polyethylene - Medium Density on-line
| Standard products are available in these forms |
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| Choose a form to search our on-line catalog
|