PEI vs. PVC-P
Both PEI and PVC-P are thermoplastics. There are 22 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is PEI and the bottom bar is PVC-P.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.4 to 5.6 | |
| 1.4 |
| Elongation at Break, % | 3.0 to 34 | |
| 180 |
| Impact Strength: Notched Izod, J/m | 55 to 110 | |
| 550 |
| Tensile Strength: Ultimate (UTS), MPa | 110 to 160 | |
| 16 |
Thermal Properties
| Glass Transition Temperature, °C | 210 | |
| 75 |
| Maximum Temperature: Autoignition, °C | 530 | |
| 320 |
| Maximum Temperature: Decomposition, °C | 530 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 170 | |
| 75 |
| Specific Heat Capacity, J/kg-K | 1050 to 1220 | |
| 1400 |
| Thermal Conductivity, W/m-K | 0.18 to 0.23 | |
| 0.17 |
| Thermal Expansion, µm/m-K | 20 to 53 | |
| 160 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 30 to 33 | |
| 20 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 14 to 15 | |
| 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.4 |
| Limiting Oxygen Index (LOI), % | 47 to 50 | |
| 44 |
| Water Absorption After 24 Hours, % | 0.17 to 0.25 | |
| 0.45 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.5 to 2.1 | |
| 0.57 |
| Stiffness to Weight: Bending, points | 39 | |
| 28 |
| Strength to Weight: Axial, points | 24 to 30 | |
| 3.2 |
| Strength to Weight: Bending, points | 40 to 44 | |
| 10 |
| Thermal Diffusivity, mm2/s | 0.11 to 0.14 | |
| 0.090 |
| Thermal Shock Resistance, points | 44 to 100 | |
| 4.9 |