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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