Low Density Polyethylene (LDPE)

High Density Polyethylene (HDPE)

Materials

Available properties

General

Density (g/cm³)

Mechanical

Elastic modulus (GPa)
Impact strength, Charpy notched (kJ/m²)
Impact strength, Charpy unnotched (kJ/m²)
Tensile strength (MPa)
Elongation (%)

Thermal

Coefficient of thermal expansion (1/K)
Max service temperature, short (°C)
Max service temperature, long (°C)
Thermal conductivity (W/(m·K))
Melting point (°C)
Specific heat capacity (J/(kg·K))

Electrical

Dielectric constant ([-])
Electrical resistivity (Ω·m)

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Low Density Polyethylene (LDPE)

High Density Polyethylene (HDPE)

Primary standard name

Equivalent standard names

Related standards

Chemical composition

Element

Weight %

Comment

Element

Weight %

Comment

Material Information

Processing Tag

Processing methods

Injection molding, blow molding, extrusion, compression molding, thermoforming, coating

Injection molding, blow molding, extrusion, compression molding

Application areas

Films for packaging, agricultural films, carrying bags, heavy-duty sacks, wine bottle closures

Fuel tanks, bottle cases, trash cans, gasoline canisters, beer crates, pipes, syringe plungers

Other

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<p>You are viewing a generic polymer page, for more information please contact the suppliers or Matm

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Optical

Transparency, tr

no

no

Mechanical

Elastic modulus, E

0.2 - 0.48 GPa at 23 °C

0.6 - 1.4 GPa at 23 °C

Impact strength, Charpy notched, Ivnot

-

6 - 50 kJ/m² at 23 °C

Tensile strength, Rm

6 - 17 MPa at 23 °C

14 - 32 MPa at 23 °C

Impact strength, Charpy unnotched, Iunnot

10 kJ/m² at 23 °C

Elongation, A

100 - 1000 % at 23 °C

100 - 1000 % at 23 °C

General

Density, ρ

0.915 - 0.92 g/cm³ at 23 °C

0.94 - 0.96 g/cm³ at 23 °C

Electrical

Dielectric constant, εr

2.2 - 2.3 [-] at 23 °C

2.3 - 2.5 [-] at 23 °C

Electrical resistivity, ρel

1.00E+15 Ω·m at 23 °C

1.00E+15 Ω·m at 23 °C

Thermal

Coefficient of thermal expansion, α

2.3E-4 - 2.5E-4 1/K at 23 °C

1.2E-4 - 2E-4 1/K at 23 °C

Max service temperature, long, Tmaxlong

60 - 75 °C

70 - 80 °C

Specific heat capacity, cp

2100 - 2500 J/(kg·K) at 23 °C

2100 - 2700 J/(kg·K) at 23 °C

Max service temperature, short

80 - 90 °C

90 - 120 °C

Flammability

UL 94 HB

UL 94 HB

Thermal conductivity, λ

0.32 - 0.4 W/(m·K) at 23 °C

0.38 - 0.51 W/(m·K) at 23 °C

Melting point, Tm

105 - 120 °C

126 - 135 °C