Spruce-pine-fir vs. EVA

Spruce-pine-fir belongs to the wood-based materials classification, while EVA belongs to the thermoplastics. There are 11 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 spruce-pine-fir and the bottom bar is EVA.

Spruce-Pine-Fir (SPF) Softwood Ethylene Vinyl Acetate (EVA)

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		16
Elastic (Young's, Tensile) Modulus, GPa		0.015 to 0.080

Elongation at Break, %		1.5
Elongation at Break, %		300 to 800

Tensile Strength: Ultimate (UTS), MPa		85
Tensile Strength: Ultimate (UTS), MPa		3.0 to 35

Thermal Properties

Specific Heat Capacity, J/kg-K		1380
Specific Heat Capacity, J/kg-K		1400

Thermal Conductivity, W/m-K		0.12
Thermal Conductivity, W/m-K		0.34

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm		0.5
Dielectric Strength (Breakdown Potential), kV/mm		21

Otherwise Unclassified Properties

Density, g/cm³		0.5
Density, g/cm³		0.93 to 1.0

Common Calculations

Stiffness to Weight: Axial, points		18
Stiffness to Weight: Axial, points		0.0087 to 0.048

Strength to Weight: Axial, points		47
Strength to Weight: Axial, points		0.87 to 10

Strength to Weight: Bending, points		86
Strength to Weight: Bending, points		4.8 to 26

Thermal Diffusivity, mm²/s		0.17
Thermal Diffusivity, mm²/s		0.25 to 0.26