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PMP vs. RPU

PMP belongs to the thermoplastics classification, while RPU belongs to the thermoset plastics. There are 15 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 PMP and the bottom bar is RPU.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.1
2.2
Elongation at Break, % 30
90
Tensile Strength: Ultimate (UTS), MPa 24
60

Thermal Properties

Specific Heat Capacity, J/kg-K 1750
1750
Thermal Conductivity, W/m-K 0.17
0.19
Thermal Expansion, µm/m-K 120
63

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 28
19
Electrical Resistivity Order of Magnitude, 10x Ω-m 14
13

Otherwise Unclassified Properties

Density, g/cm3 0.83
1.2

Common Calculations

Stiffness to Weight: Axial, points 0.74
1.0
Stiffness to Weight: Bending, points 41
36
Strength to Weight: Axial, points 8.0
14
Strength to Weight: Bending, points 22
28
Thermal Diffusivity, mm2/s 0.12
0.090
Thermal Shock Resistance, points 13
31