Annealed R31539 Cobalt vs. Annealed K93600
Annealed R31539 cobalt belongs to the cobalt alloys classification, while annealed K93600 belongs to the iron alloys. There are 20 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is annealed R31539 cobalt and the bottom bar is annealed K93600.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 140 |
| Elongation at Break, % | 22 | |
| 35 |
| Reduction in Area, % | 23 | |
| 80 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 | |
| 480 |
| Tensile Strength: Yield (Proof), MPa | 590 | |
| 280 |
Thermal Properties
| Melting Onset (Solidus), °C | 1290 | |
| 1430 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 520 |
| Thermal Conductivity, W/m-K | 13 | |
| 13 |
| Thermal Expansion, µm/m-K | 13 | |
| 7.3 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.1 | |
| 2.4 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 8.1 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 780 | |
| 280 |
| Stiffness to Weight: Axial, points | 15 | |
| 9.4 |
| Stiffness to Weight: Bending, points | 24 | |
| 21 |
| Strength to Weight: Axial, points | 33 | |
| 16 |
| Strength to Weight: Bending, points | 27 | |
| 17 |
| Thermal Diffusivity, mm2/s | 3.5 | |
| 3.1 |
| Thermal Shock Resistance, points | 24 | |
| 34 |