CA vs. RPU
CA belongs to the thermoplastics classification, while RPU belongs to the thermoset plastics. There are 16 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 CA and the bottom bar is RPU.
Metric UnitsUS Customary Units
Mechanical Properties
Elongation at Break, % | 25 to 30 | |
90 |
Flexural Modulus, GPa | 1.7 to 2.1 | |
2.0 |
Flexural Strength, MPa | 40 to 55 | |
83 |
Tensile Strength: Ultimate (UTS), MPa | 30 to 37 | |
60 |
Thermal Properties
Maximum Temperature: Autoignition, °C | 400 | |
380 |
Maximum Temperature: Decomposition, °C | 250 | |
270 |
Specific Heat Capacity, J/kg-K | 1500 | |
1750 |
Thermal Conductivity, W/m-K | 0.25 | |
0.19 |
Thermal Expansion, µm/m-K | 14 | |
63 |
Vicat Softening Temperature, °C | 100 to 110 | |
120 |
Electrical Properties
Dielectric Strength (Breakdown Potential), kV/mm | 15 | |
19 |
Electrical Resistivity Order of Magnitude, 10x Ω-m | 16 | |
13 |
Otherwise Unclassified Properties
Density, g/cm3 | 1.3 | |
1.2 |
Common Calculations
Strength to Weight: Axial, points | 6.4 to 7.9 | |
14 |
Strength to Weight: Bending, points | 17 to 19 | |
28 |
Thermal Diffusivity, mm2/s | 0.13 | |
0.090 |