NEMA Laminate vs. PEI
NEMA laminate belongs to the thermoset plastics classification, while PEI belongs to the thermoplastics. There are 13 material properties with values for both materials. Properties with values for just one material (17, in this case) are not shown.
For each property being compared, the top bar is NEMA laminate and the bottom bar is PEI.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 190 to 360 | |
| 140 to 180 |
| Flexural Modulus, GPa | 6.4 to 18 | |
| 3.4 to 5.9 |
| Flexural Strength, MPa | 87 to 340 | |
| 140 to 210 |
| Impact Strength: Notched Izod, J/m | 20 to 430 | |
| 55 to 110 |
| Rockwell M Hardness | 100 to 120 | |
| 110 to 130 |
| Tensile Strength: Ultimate (UTS), MPa | 55 to 260 | |
| 110 to 160 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 120 to 200 | |
| 170 |
| Thermal Expansion, µm/m-K | 9.0 to 20 | |
| 20 to 53 |
Electrical Properties
| Dielectric Strength (Breakdown Potential), kV/mm | 12 to 21 | |
| 30 to 33 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.3 to 1.9 | |
| 1.3 to 1.5 |
| Water Absorption After 24 Hours, % | 0.17 to 3.5 | |
| 0.17 to 0.25 |
Common Calculations
| Strength to Weight: Axial, points | 8.3 to 40 | |
| 24 to 30 |
| Strength to Weight: Bending, points | 17 to 50 | |
| 40 to 44 |