Nickel Beryllium 360 vs. R31538 Cobalt
Nickel beryllium 360 belongs to the nickel alloys classification, while R31538 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 R31538 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 220 |
| Elongation at Break, % | 1.0 to 30 | |
| 13 to 23 |
| 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 | |
| 1020 to 1360 |
| Tensile Strength: Yield (Proof), MPa | 380 to 1590 | |
| 580 to 930 |
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 200 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 3440 | |
| 750 to 1920 |
| Stiffness to Weight: Axial, points | 13 | |
| 15 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 26 to 62 | |
| 34 to 45 |
| 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 | |
| 25 to 33 |