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PBI vs. PVC-P

PBI belongs to the thermoset plastics classification, while PVC-P belongs to the thermoplastics. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is PBI and the bottom bar is PVC-P.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 5.9
1.4
Elongation at Break, % 3.0
180
Impact Strength: Notched Izod, J/m 27
550
Tensile Strength: Ultimate (UTS), MPa 160
16

Thermal Properties

Glass Transition Temperature, °C 410
75
Maximum Temperature: Decomposition, °C 590
250
Maximum Temperature: Mechanical, °C 340
75
Specific Heat Capacity, J/kg-K 930
1400
Thermal Conductivity, W/m-K 0.41
0.17
Thermal Expansion, µm/m-K 23
160

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.4
5.8
Dielectric Strength (Breakdown Potential), kV/mm 23
20
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
11

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.4
Limiting Oxygen Index (LOI), % 58
44
Water Absorption After 24 Hours, % 0.4
0.45

Common Calculations

Stiffness to Weight: Axial, points 2.5
0.57
Stiffness to Weight: Bending, points 46
28
Strength to Weight: Axial, points 34
3.2
Strength to Weight: Bending, points 50
10
Thermal Diffusivity, mm2/s 0.34
0.090
Thermal Shock Resistance, points 84
4.9