COC vs. PBI
COC belongs to the thermoplastics classification, while PBI belongs to the thermoset plastics. There are 12 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is COC and the bottom bar is PBI.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 3.0 | |
| 5.9 |
| Elongation at Break, % | 2.5 | |
| 3.0 |
| Tensile Strength: Ultimate (UTS), MPa | 60 | |
| 160 |
Thermal Properties
| Thermal Expansion, µm/m-K | 60 | |
| 23 |
Electrical Properties
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 14 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 1.0 | |
| 1.3 |
| Water Absorption After 24 Hours, % | 0 | |
| 0.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 1.7 | |
| 2.5 |
| Stiffness to Weight: Bending, points | 48 | |
| 46 |
| Strength to Weight: Axial, points | 17 | |
| 34 |
| Strength to Weight: Bending, points | 34 | |
| 50 |
| Thermal Shock Resistance, points | 24 | |
| 84 |