MakeItFrom.com
Menu (ESC)

PBI vs. DAP

Both PBI and DAP are thermoset plastics. There are 21 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 350
150
Elastic (Young's, Tensile) Modulus, GPa 5.9
13
Elongation at Break, % 3.0
31
Flexural Strength, MPa 220
62
Impact Strength: Notched Izod, J/m 27
14
Tensile Strength: Ultimate (UTS), MPa 160
28

Thermal Properties

Glass Transition Temperature, °C 410
150
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 430
160
Specific Heat Capacity, J/kg-K 930
1450
Thermal Conductivity, W/m-K 0.41
0.6
Thermal Expansion, µm/m-K 23
25

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 3.4
5.2
Dielectric Strength (Breakdown Potential), kV/mm 23
40
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
13

Otherwise Unclassified Properties

Density, g/cm3 1.3
1.7

Common Calculations

Stiffness to Weight: Axial, points 2.5
4.1
Stiffness to Weight: Bending, points 46
46
Strength to Weight: Axial, points 34
4.5
Strength to Weight: Bending, points 50
12
Thermal Diffusivity, mm2/s 0.34
0.24
Thermal Shock Resistance, points 84
6.3