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PBI vs. PC

PBI belongs to the thermoset plastics classification, while PC belongs to the thermoplastics. There are 12 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 PBI and the bottom bar is PC.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 3.0
3.5 to 110
Flexural Modulus, GPa 6.5
2.3 to 10
Flexural Strength, MPa 220
92 to 160
Impact Strength: Notched Izod, J/m 27
140 to 440
Tensile Strength: Ultimate (UTS), MPa 160
66 to 160

Thermal Properties

Glass Transition Temperature, °C 410
150
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 430
130 to 150
Specific Heat Capacity, J/kg-K 930
1000 to 1200
Thermal Expansion, µm/m-K 23
10 to 69

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.2 to 1.4

Common Calculations

Strength to Weight: Axial, points 34
15 to 30
Strength to Weight: Bending, points 50
30 to 45