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LDPE vs. PCTFE

Both LDPE and PCTFE are thermoplastics. There are 16 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.3
1.4
Tensile Strength: Ultimate (UTS), MPa 7.0
36

Thermal Properties

Glass Transition Temperature, °C -130
100
Maximum Temperature: Autoignition, °C 380
580
Maximum Temperature: Decomposition, °C 400
370
Melting Onset (Solidus), °C 110
220
Specific Heat Capacity, J/kg-K 2300
920
Thermal Conductivity, W/m-K 0.36
0.21
Thermal Expansion, µm/m-K 220
130

Otherwise Unclassified Properties

Density, g/cm3 0.92
2.1

Common Calculations

Stiffness to Weight: Axial, points 0.18
0.37
Stiffness to Weight: Bending, points 24
17
Strength to Weight: Axial, points 2.1
4.6
Strength to Weight: Bending, points 8.8
11
Thermal Diffusivity, mm2/s 0.17
0.11
Thermal Shock Resistance, points 7.6
14