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PBT vs. PPE

Both PBT and PPE are thermoplastics. There are 14 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.7 to 8.7
2.3
Elongation at Break, % 2.5 to 43
30
Flexural Strength, MPa 79 to 210
75
Tensile Strength: Ultimate (UTS), MPa 58 to 140
55

Thermal Properties

Glass Transition Temperature, °C 40
85
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 4.0
120
Maximum Temperature: Autoignition, °C 380
430
Melting Onset (Solidus), °C 230
260
Specific Heat Capacity, J/kg-K 1040 to 1200
1200

Otherwise Unclassified Properties

Density, g/cm3 1.3 to 1.5
1.1

Common Calculations

Stiffness to Weight: Axial, points 1.1 to 3.2
1.2
Stiffness to Weight: Bending, points 35 to 45
42
Strength to Weight: Axial, points 12 to 25
14
Strength to Weight: Bending, points 25 to 38
30