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PBT vs. CAP

Both PBT and CAP are thermoplastics. There are 11 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 2.5 to 43
35 to 50
Flexural Modulus, GPa 2.6 to 9.1
1.2 to 1.9
Flexural Strength, MPa 79 to 210
29 to 56
Tensile Strength: Ultimate (UTS), MPa 58 to 140
28 to 45

Thermal Properties

Glass Transition Temperature, °C 40
190
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 4.0
65 to 80
Heat Deflection Temperature At 455 kPa (66 psi), °C 160
75 to 90
Specific Heat Capacity, J/kg-K 1040 to 1200
1480

Otherwise Unclassified Properties

Density, g/cm3 1.3 to 1.5
1.2

Common Calculations

Strength to Weight: Axial, points 12 to 25
6.5 to 10
Strength to Weight: Bending, points 25 to 38
17 to 23