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PS vs. Hardwood

PS belongs to the thermoplastics classification, while hardwood belongs to the wood-based materials. There are 15 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 PS and the bottom bar is hardwood.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 1.9 to 2.9
12
Elongation at Break, % 1.8 to 40
2.0
Poisson's Ratio 0.4 to 0.41
0.37
Tensile Strength: Ultimate (UTS), MPa 32 to 44
80

Thermal Properties

Specific Heat Capacity, J/kg-K 1250 to 1400
1260
Thermal Conductivity, W/m-K 0.14 to 0.22
0.16
Thermal Expansion, µm/m-K 80 to 98
6.0

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 18 to 20
0.5

Otherwise Unclassified Properties

Density, g/cm3 1.0
0.7

Common Calculations

Stiffness to Weight: Axial, points 1.0 to 1.5
9.5
Stiffness to Weight: Bending, points 40 to 45
110
Strength to Weight: Axial, points 8.5 to 12
32
Strength to Weight: Bending, points 22 to 26
59
Thermal Diffusivity, mm2/s 0.11 to 0.15
0.18
Thermal Shock Resistance, points 11 to 15
79