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PBI vs. UF

Both PBI and UF are thermoset plastics. There are 15 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is PBI and the bottom bar is UF.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 5.9
9.0
Elongation at Break, % 3.0
1.0
Tensile Strength: Ultimate (UTS), MPa 160
30

Thermal Properties

Specific Heat Capacity, J/kg-K 930
1200
Thermal Conductivity, W/m-K 0.41
0.4
Thermal Expansion, µm/m-K 23
55

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 23
35
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
9.0

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.5

Common Calculations

Stiffness to Weight: Axial, points 2.5
3.3
Stiffness to Weight: Bending, points 46
46
Strength to Weight: Axial, points 34
5.6
Strength to Weight: Bending, points 50
14
Thermal Diffusivity, mm2/s 0.34
0.22
Thermal Shock Resistance, points 84
4.3