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LDPE vs. Thermoplastic PI

Both LDPE and thermoplastic PI are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.3
3.7 to 20
Tensile Strength: Ultimate (UTS), MPa 7.0
110 to 220

Thermal Properties

Glass Transition Temperature, °C -130
260
Maximum Temperature: Autoignition, °C 380
600
Maximum Temperature: Decomposition, °C 400
530
Specific Heat Capacity, J/kg-K 2300
970 to 1100

Otherwise Unclassified Properties

Density, g/cm3 0.92
1.4 to 1.5

Common Calculations

Stiffness to Weight: Axial, points 0.18
1.5 to 7.9
Stiffness to Weight: Bending, points 24
37 to 64
Strength to Weight: Axial, points 2.1
22 to 42
Strength to Weight: Bending, points 8.8
36 to 57