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LDPE vs. Epoxy

LDPE belongs to the thermoplastics classification, while epoxy belongs to the thermoset plastics. There are 16 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is LDPE and the bottom bar is epoxy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.3
2.4
Shear Modulus, GPa 0.21
0.85
Tensile Strength: Ultimate (UTS), MPa 7.0
67

Thermal Properties

Glass Transition Temperature, °C -130
120
Maximum Temperature: Autoignition, °C 380
430
Maximum Temperature: Decomposition, °C 400
430
Specific Heat Capacity, J/kg-K 2300
1500
Thermal Conductivity, W/m-K 0.36
0.2
Thermal Expansion, µm/m-K 220
100

Otherwise Unclassified Properties

Density, g/cm3 0.92
1.3

Common Calculations

Stiffness to Weight: Axial, points 0.18
1.0
Stiffness to Weight: Bending, points 24
34
Strength to Weight: Axial, points 2.1
14
Strength to Weight: Bending, points 8.8
28
Thermal Diffusivity, mm2/s 0.17
0.1
Thermal Shock Resistance, points 7.6
20