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RPU vs. ETFE

RPU belongs to the thermoset plastics classification, while ETFE belongs to the thermoplastics. There are 18 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 2.2
1.5
Elongation at Break, % 90
230
Flexural Modulus, GPa 2.0
1.2
Tensile Strength: Ultimate (UTS), MPa 60
46

Thermal Properties

Maximum Temperature: Autoignition, °C 380
540
Maximum Temperature: Decomposition, °C 270
400
Specific Heat Capacity, J/kg-K 1750
1000
Thermal Conductivity, W/m-K 0.19
0.24
Thermal Expansion, µm/m-K 63
95

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 19
16
Electrical Resistivity Order of Magnitude, 10x Ω-m 13
15

Otherwise Unclassified Properties

Density, g/cm3 1.2
1.8

Common Calculations

Stiffness to Weight: Axial, points 1.0
0.48
Stiffness to Weight: Bending, points 36
22
Strength to Weight: Axial, points 14
7.3
Strength to Weight: Bending, points 28
16
Thermal Diffusivity, mm2/s 0.090
0.14
Thermal Shock Resistance, points 31
23