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RPU vs. DAP

Both RPU and DAP are thermoset plastics. There are 16 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.2
13
Elongation at Break, % 90
31
Flexural Strength, MPa 83
62
Tensile Strength: Ultimate (UTS), MPa 60
28

Thermal Properties

Specific Heat Capacity, J/kg-K 1750
1450
Thermal Conductivity, W/m-K 0.19
0.6
Thermal Expansion, µm/m-K 63
25

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 19
40
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
13

Otherwise Unclassified Properties

Density, g/cm3 1.2
1.7

Common Calculations

Stiffness to Weight: Axial, points 1.0
4.1
Stiffness to Weight: Bending, points 36
46
Strength to Weight: Axial, points 14
4.5
Strength to Weight: Bending, points 28
12
Thermal Diffusivity, mm2/s 0.090
0.24
Thermal Shock Resistance, points 31
6.3