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UP vs. Spruce-pine-fir

UP belongs to the thermoset plastics classification, while spruce-pine-fir belongs to the wood-based materials. There are 13 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is UP and the bottom bar is spruce-pine-fir.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 17
16
Elongation at Break, % 1.0
1.5
Tensile Strength: Ultimate (UTS), MPa 30
85

Thermal Properties

Specific Heat Capacity, J/kg-K 1200
1380
Thermal Conductivity, W/m-K 0.7
0.12
Thermal Expansion, µm/m-K 3.0
6.5

Otherwise Unclassified Properties

Density, g/cm3 2.0
0.5
Limiting Oxygen Index (LOI), % 20
24

Common Calculations

Stiffness to Weight: Axial, points 4.7
18
Strength to Weight: Axial, points 4.2
47
Strength to Weight: Bending, points 11
86
Thermal Diffusivity, mm2/s 0.29
0.17
Thermal Shock Resistance, points 42
58