Monel 400 vs. PBI
Monel 400 and PBI belong to fundamentally different material chemistries. Monel 400 is a metal, while PBI is a polymeric material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 15 material properties with values for both materials. Properties with values for just one material (30, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is Monel 400 and the bottom bar is PBI.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 160 | |
| 5.9 |
| Elongation at Break, % | 20 to 40 | |
| 3.0 |
| Fatigue Strength, MPa | 230 to 290 | |
| 56 |
| Tensile Strength: Ultimate (UTS), MPa | 540 to 780 | |
| 160 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 1000 | |
| 340 |
| Specific Heat Capacity, J/kg-K | 430 | |
| 930 |
| Thermal Conductivity, W/m-K | 23 | |
| 0.41 |
| Thermal Expansion, µm/m-K | 14 | |
| 23 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.9 | |
| 1.3 |
Common Calculations
| Stiffness to Weight: Axial, points | 10 | |
| 2.5 |
| Stiffness to Weight: Bending, points | 21 | |
| 46 |
| Strength to Weight: Axial, points | 17 to 25 | |
| 34 |
| Strength to Weight: Bending, points | 17 to 21 | |
| 50 |
| Thermal Diffusivity, mm2/s | 6.1 | |
| 0.34 |
| Thermal Shock Resistance, points | 17 to 25 | |
| 84 |