EVA vs. Thermoset PI

EVA belongs to the thermoplastics classification, while thermoset PI belongs to the thermoset plastics. There are 10 material properties with values for both materials. Properties with values for just one material (20, in this case) are not shown.

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

Ethylene Vinyl Acetate (EVA)Thermoset Polyimide (PI)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		0.93 to 1.0
Density, g/cm³		1.4 to 1.6

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

Elongation at Break, %		300 to 800
Elongation at Break, %		2.0 to 5.9

Maximum Temperature: Decomposition, °C		450
Maximum Temperature: Decomposition, °C		330

Specific Heat Capacity, J/kg-K		1400
Specific Heat Capacity, J/kg-K		1130

Strength to Weight: Axial, points		0.87 to 10
Strength to Weight: Axial, points		6.5 to 16

Strength to Weight: Bending, points		4.8 to 26
Strength to Weight: Bending, points		16 to 30

Tensile Strength: Ultimate (UTS), MPa		3.0 to 35
Tensile Strength: Ultimate (UTS), MPa		37 to 81

Thermal Conductivity, W/m-K		0.34
Thermal Conductivity, W/m-K		0.29 to 1.7

Thermal Diffusivity, mm²/s		0.25 to 0.26
Thermal Diffusivity, mm²/s		0.18 to 0.95

EVA vs. Thermoset PI

Material Properties

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