R31539 Cobalt vs. Nickel Beryllium 360
R31539 cobalt belongs to the cobalt alloys classification, while nickel beryllium 360 belongs to the nickel 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 R31539 cobalt and the bottom bar is nickel beryllium 360.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 200 |
| Elongation at Break, % | 13 to 22 | |
| 1.0 to 30 |
| Fatigue Strength, MPa | 310 to 480 | |
| 260 to 710 |
| Poisson's Ratio | 0.29 | |
| 0.3 |
| Shear Modulus, GPa | 86 | |
| 77 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 to 1340 | |
| 780 to 1860 |
| Tensile Strength: Yield (Proof), MPa | 590 to 940 | |
| 380 to 1590 |
Thermal Properties
| Melting Completion (Liquidus), °C | 1360 | |
| 1330 |
| Melting Onset (Solidus), °C | 1290 | |
| 1200 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 460 |
| Thermal Conductivity, W/m-K | 13 | |
| 48 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 5.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 5.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.3 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 190 | |
| 12 to 190 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 780 to 2000 | |
| 360 to 3440 |
| Stiffness to Weight: Axial, points | 15 | |
| 13 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 33 to 44 | |
| 26 to 62 |
| Strength to Weight: Bending, points | 27 to 32 | |
| 23 to 41 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 13 |
| Thermal Shock Resistance, points | 24 to 32 | |
| 19 to 46 |