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DAP vs. PPO

DAP belongs to the thermoset plastics classification, while PPO belongs to the thermoplastics. There are 13 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 DAP and the bottom bar is PPO.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 31
3.5 to 28
Flexural Strength, MPa 62
92 to 140
Impact Strength: Notched Izod, J/m 14
80 to 270
Tensile Strength: Ultimate (UTS), MPa 28
63 to 140

Thermal Properties

Heat Deflection Temperature At 1.82 MPa (264 psi), °C 160
120 to 140
Specific Heat Capacity, J/kg-K 1450
1020 to 1250
Thermal Expansion, µm/m-K 25
25 to 60

Electrical Properties

Dielectric Constant (Relative Permittivity) At 1 Hz 5.2
2.7 to 3.2
Dielectric Strength (Breakdown Potential), kV/mm 40
19 to 21
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
15

Otherwise Unclassified Properties

Density, g/cm3 1.7
1.1 to 1.4

Common Calculations

Strength to Weight: Axial, points 4.5
16 to 27
Strength to Weight: Bending, points 12
33 to 42