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NEMA Laminate vs. Thermoset PI

Both NEMA laminate and thermoset PI are thermoset plastics. There are 12 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is NEMA laminate and the bottom bar is thermoset PI.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 190 to 360
120 to 210
Flexural Modulus, GPa 6.4 to 18
3.1 to 4.8
Flexural Strength, MPa 87 to 340
60 to 100
Impact Strength: Notched Izod, J/m 20 to 430
21 to 43
Tensile Strength: Ultimate (UTS), MPa 55 to 260
37 to 81

Thermal Properties

Maximum Temperature: Mechanical, °C 120 to 200
260
Thermal Expansion, µm/m-K 9.0 to 20
38 to 54

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 12 to 21
20

Otherwise Unclassified Properties

Density, g/cm3 1.3 to 1.9
1.4 to 1.6
Water Absorption After 24 Hours, % 0.17 to 3.5
0.14 to 0.24

Common Calculations

Strength to Weight: Axial, points 8.3 to 40
6.5 to 16
Strength to Weight: Bending, points 17 to 50
16 to 30