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CAB vs. PBT

Both CAB and PBT are thermoplastics. There are 12 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 50 to 55
2.5 to 43
Flexural Modulus, GPa 0.8 to 1.7
2.6 to 9.1
Flexural Strength, MPa 21 to 57
79 to 210
Tensile Strength: Ultimate (UTS), MPa 20 to 50
58 to 140

Thermal Properties

Glass Transition Temperature, °C 140
40
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 53 to 82
4.0
Heat Deflection Temperature At 455 kPa (66 psi), °C 68 to 92
160
Specific Heat Capacity, J/kg-K 1460
1040 to 1200

Otherwise Unclassified Properties

Density, g/cm3 1.2
1.3 to 1.5
Limiting Oxygen Index (LOI), % 18
20

Common Calculations

Strength to Weight: Axial, points 4.8 to 12
12 to 25
Strength to Weight: Bending, points 14 to 25
25 to 38