Nickel Beryllium 360 vs. R31539 Cobalt
Nickel beryllium 360 belongs to the nickel alloys classification, while R31539 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.
For each property being compared, the top bar is nickel beryllium 360 and the bottom bar is R31539 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 220 |
| Elongation at Break, % | 1.0 to 30 | |
| 13 to 22 |
| Fatigue Strength, MPa | 260 to 710 | |
| 310 to 480 |
| Poisson's Ratio | 0.3 | |
| 0.29 |
| Shear Modulus, GPa | 77 | |
| 86 |
| Tensile Strength: Ultimate (UTS), MPa | 780 to 1860 | |
| 1000 to 1340 |
| Tensile Strength: Yield (Proof), MPa | 380 to 1590 | |
| 590 to 940 |
Thermal Properties
| Melting Completion (Liquidus), °C | 1330 | |
| 1360 |
| Melting Onset (Solidus), °C | 1200 | |
| 1290 |
| Specific Heat Capacity, J/kg-K | 460 | |
| 450 |
| Thermal Conductivity, W/m-K | 48 | |
| 13 |
| Thermal Expansion, µm/m-K | 14 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 5.0 | |
| 2.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 5.4 | |
| 2.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.3 | |
| 8.4 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 12 to 190 | |
| 140 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 3440 | |
| 780 to 2000 |
| Stiffness to Weight: Axial, points | 13 | |
| 15 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 to 62 | |
| 33 to 44 |
| Strength to Weight: Bending, points | 23 to 41 | |
| 27 to 32 |
| Thermal Diffusivity, mm2/s | 13 | |
| 3.5 |
| Thermal Shock Resistance, points | 19 to 46 | |
| 24 to 32 |