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PAR vs. CAB

Both PAR and CAB are thermoplastics. There are 18 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 PAR and the bottom bar is CAB.

Metric UnitsUS Customary Units

Mechanical Properties

Elongation at Break, % 50
50 to 55
Flexural Modulus, GPa 2.1
0.8 to 1.7
Flexural Strength, MPa 75
21 to 57
Tensile Strength: Ultimate (UTS), MPa 67
20 to 50

Thermal Properties

Glass Transition Temperature, °C 190
140
Heat Deflection Temperature At 1.82 MPa (264 psi), °C 170
53 to 82
Heat Deflection Temperature At 455 kPa (66 psi), °C 180
68 to 92
Specific Heat Capacity, J/kg-K 1200
1460
Thermal Conductivity, W/m-K 0.18
0.25
Thermal Expansion, µm/m-K 88
14

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 16
15
Electrical Resistivity Order of Magnitude, 10x Ω-m 12
16

Otherwise Unclassified Properties

Density, g/cm3 1.2
1.2
Limiting Oxygen Index (LOI), % 35
18
Water Absorption After 24 Hours, % 0.26
1.2 to 1.6

Common Calculations

Strength to Weight: Axial, points 16
4.8 to 12
Strength to Weight: Bending, points 31
14 to 25
Thermal Diffusivity, mm2/s 0.13
0.14 to 0.15