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Medium Density Polyethylene (MDPE)

Alternative and trade names
Lupolen®, Eltex®, Flexirene®, Clearflex®, Eraclene®, Borstar®
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Description

Medium-density polyethylene with low temperature impact resistance and high stress crack resistance (experiments show resistance against biodiesel fuel for some grades). These products are also produced as film extrusion grades.

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Properties

General

Density

ρ

0.93 - 0.94 g/cm³ at 20 °C

Thermal

Coefficient of thermal expansion

α

1.8E-4 - 2.3E-4 1/K at 20 °C

Flammability

UL 94 HB

Max service temperature, long

Tmaxlong

75 °C

Max service temperature, short

100 °C

Melting point

Tm

120 - 125 °C

Specific heat capacity

cp

2300 J/(kg·K) at 20 °C

Thermal conductivity

λ

0.48 W/(m·K) at 20 °C

Electrical

Dielectric constant

εr

2.3 [-] at 20 °C

Electrical resistivity

ρel

1.00E+15 Ω·m at 20 °C

Optical

Transparency

no

Technological properties

Application areas

Gas pipes, toys, carts, packaging, over-wrap films, milk pouches

Processing methods

Injection molding, blow molding, extrusion, rotational molding

This material data has been provided by M-Base.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.