Hardwood vs. PAR

Hardwood belongs to the wood-based materials classification, while PAR belongs to the thermoplastics. There are 15 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.

For each property being compared, the top bar is hardwood and the bottom bar is PAR.

Hardwood Polyarylate (PAR)

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa		40
Compressive (Crushing) Strength, MPa		93

Elastic (Young's, Tensile) Modulus, GPa		12
Elastic (Young's, Tensile) Modulus, GPa		2.0

Elongation at Break, %		2.0
Elongation at Break, %		50

Tensile Strength: Ultimate (UTS), MPa		80
Tensile Strength: Ultimate (UTS), MPa		67

Thermal Properties

Specific Heat Capacity, J/kg-K		1260
Specific Heat Capacity, J/kg-K		1200

Thermal Conductivity, W/m-K		0.16
Thermal Conductivity, W/m-K		0.18

Thermal Expansion, µm/m-K		6.0
Thermal Expansion, µm/m-K		88

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm		0.5
Dielectric Strength (Breakdown Potential), kV/mm		16

Otherwise Unclassified Properties

Density, g/cm³		0.7
Density, g/cm³		1.2

Common Calculations

Stiffness to Weight: Axial, points		9.5
Stiffness to Weight: Axial, points		0.93

Stiffness to Weight: Bending, points		110
Stiffness to Weight: Bending, points		35

Strength to Weight: Axial, points		32
Strength to Weight: Axial, points		16

Strength to Weight: Bending, points		59
Strength to Weight: Bending, points		31

Thermal Diffusivity, mm²/s		0.18
Thermal Diffusivity, mm²/s		0.13

Thermal Shock Resistance, points		79
Thermal Shock Resistance, points		27