Epoxy vs. RTPU
Epoxy belongs to the thermoset plastics classification, while RTPU belongs to the thermoplastics. There are 17 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 epoxy and the bottom bar is RTPU.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 2.4 | |
4.0 |
Elongation at Break, % | 4.5 | |
5.0 |
Tensile Strength: Ultimate (UTS), MPa | 67 | |
75 |
Thermal Properties
Maximum Temperature: Autoignition, °C | 430 | |
270 |
Maximum Temperature: Decomposition, °C | 430 | |
320 |
Specific Heat Capacity, J/kg-K | 1500 | |
1760 |
Thermal Conductivity, W/m-K | 0.2 | |
0.6 |
Thermal Expansion, µm/m-K | 100 | |
100 |
Electrical Properties
Dielectric Strength (Breakdown Potential), kV/mm | 16 | |
24 |
Electrical Resistivity Order of Magnitude, 10x Ω-m | 13 | |
14 |
Otherwise Unclassified Properties
Density, g/cm3 | 1.3 | |
1.1 |
Common Calculations
Stiffness to Weight: Axial, points | 1.0 | |
2.1 |
Stiffness to Weight: Bending, points | 34 | |
50 |
Strength to Weight: Axial, points | 14 | |
20 |
Strength to Weight: Bending, points | 28 | |
38 |
Thermal Diffusivity, mm2/s | 0.1 | |
0.32 |
Thermal Shock Resistance, points | 20 | |
13 |