PBT vs. NBR Rubber
PBT belongs to the thermoplastics classification, while NBR rubber belongs to the thermoset elastomers (rubber). There are 7 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 PBT and the bottom bar is NBR rubber.
Metric UnitsUS Customary Units
Material Properties
| Density, g/cm3 | 1.3 to 1.5 | |
| 1.3 |
| Elongation at Break, % | 2.5 to 43 | |
| 380 |
| Glass Transition Temperature, °C | 40 | |
| -30 |
| Specific Heat Capacity, J/kg-K | 1040 to 1200 | |
| 1350 |
| Strength to Weight: Axial, points | 12 to 25 | |
| 3.9 |
| Strength to Weight: Bending, points | 25 to 38 | |
| 12 |
| Tensile Strength: Ultimate (UTS), MPa | 58 to 140 | |
| 18 |