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Spruce-pine-fir vs. 6008 Aluminum

Spruce-pine-fir and 6008 aluminum belong to fundamentally different material chemistries. Spruce-pine-fir is a polymeric material, while 6008 aluminum is a metal. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (18, 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 spruce-pine-fir and the bottom bar is 6008 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 16
69
Elongation at Break, % 1.5
9.1 to 17
Poisson's Ratio 0.38
0.33
Shear Modulus, GPa 1.2
26
Tensile Strength: Ultimate (UTS), MPa 85
200 to 290

Thermal Properties

Maximum Temperature: Mechanical, °C 130
180
Specific Heat Capacity, J/kg-K 1380
900
Thermal Conductivity, W/m-K 0.12
190
Thermal Expansion, µm/m-K 6.5
23

Otherwise Unclassified Properties

Density, g/cm3 0.5
2.7

Common Calculations

Stiffness to Weight: Axial, points 18
14
Strength to Weight: Axial, points 47
21 to 29
Strength to Weight: Bending, points 86
28 to 35
Thermal Diffusivity, mm2/s 0.17
77
Thermal Shock Resistance, points 58
9.0 to 13