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Density 0.926-0.940 g/cm3
Young modulus/ E modulus/ Tensile modulus 172–379 MPa
Tensile strengtht) 12.4–19.3 MPa
Elongation @ break 100–150%
Brittleness, low temperatur -118 °C
Vicat 99-124 °C
Specific heat (c) 1.916 kJ/kg.K
Source: J.Brandrup, E. H. Immergut & E.A. Grulke, Polymer Handbook Fourth edition, ISBN 0-471-48171-8

Medium Density Polyethylene, or MDPE is a type of Polyethylene defined by a density range of 0.926 - 0.940 g/cm3. It is less dense than HDPE, which is more common. MDPE can be produced by chromium/silica catalysts, Ziegler-Natta catalysts or metallocene catalysts.MDPE is defined by a density range of 0.926–0.940 g/cm3. MDPE has good shock and drop resistance properties. It also is less notch sensitive than HDPE, stress cracking resistance is better than HDPE. MDPE is typically used in gas pipes and fittings, sacks, shrink film, packaging film, carrier bags and screw closures.

For more information on Polyethylene in general, see Polyethylene.


Up to date as of January 15, 2010

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