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LDPE vs. PBT

Both LDPE and PBT are thermoplastics. There are 12 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 0.3
2.7 to 8.7
Tensile Strength: Ultimate (UTS), MPa 7.0
58 to 140

Thermal Properties

Glass Transition Temperature, °C -130
40
Maximum Temperature: Autoignition, °C 380
380
Maximum Temperature: Decomposition, °C 400
380
Melting Onset (Solidus), °C 110
230
Specific Heat Capacity, J/kg-K 2300
1040 to 1200

Otherwise Unclassified Properties

Density, g/cm3 0.92
1.3 to 1.5

Common Calculations

Stiffness to Weight: Axial, points 0.18
1.1 to 3.2
Stiffness to Weight: Bending, points 24
35 to 45
Strength to Weight: Axial, points 2.1
12 to 25
Strength to Weight: Bending, points 8.8
25 to 38