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PBT vs. PP Homopolymer

Both PBT and PP homopolymer are thermoplastics. There are 10 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 PP homopolymer.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 1.3 to 1.5
0.91 to 1.2
Elongation at Break, % 2.5 to 43
3.0 to 80
Flexural Modulus, GPa 2.6 to 9.1
1.5 to 7.0
Flexural Strength, MPa 79 to 210
41 to 100
Glass Transition Temperature, °C 40
170
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 4.0
73 to 160
Specific Heat Capacity, J/kg-K 1040 to 1200
1230 to 1900
Strength to Weight: Axial, points 12 to 25
11 to 21
Strength to Weight: Bending, points 25 to 38
27 to 37
Tensile Strength: Ultimate (UTS), MPa 58 to 140
36 to 93