R30605 Cobalt vs. K94200 Alloy
R30605 cobalt belongs to the cobalt alloys classification, while K94200 alloy belongs to the iron alloys. There are 19 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.
For each property being compared, the top bar is R30605 cobalt and the bottom bar is K94200 alloy.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 140 |
| Elongation at Break, % | 34 | |
| 5.0 to 32 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 81 | |
| 54 |
| Tensile Strength: Ultimate (UTS), MPa | 1130 to 1900 | |
| 500 to 710 |
| Tensile Strength: Yield (Proof), MPa | 470 to 1600 | |
| 270 to 650 |
Thermal Properties
| Melting Onset (Solidus), °C | 1330 | |
| 1440 |
| Specific Heat Capacity, J/kg-K | 410 | |
| 500 |
| Thermal Conductivity, W/m-K | 9.6 | |
| 15 |
| Thermal Expansion, µm/m-K | 12 | |
| 5.0 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.0 | |
| 2.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 1.8 | |
| 3.0 |
Otherwise Unclassified Properties
| Density, g/cm3 | 9.6 | |
| 8.2 |
Common Calculations
| Stiffness to Weight: Axial, points | 12 | |
| 9.8 |
| Stiffness to Weight: Bending, points | 21 | |
| 21 |
| Strength to Weight: Axial, points | 33 to 55 | |
| 17 to 24 |
| Strength to Weight: Bending, points | 25 to 36 | |
| 17 to 22 |
| Thermal Diffusivity, mm2/s | 2.5 | |
| 3.7 |
| Thermal Shock Resistance, points | 31 to 52 | |
| 49 to 70 |