ASTM A514 Steel vs. R30008 Cobalt
ASTM A514 steel belongs to the iron alloys classification, while R30008 cobalt belongs to the cobalt alloys. There are 23 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is ASTM A514 steel and the bottom bar is R30008 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 210 |
| Elongation at Break, % | 18 to 21 | |
| 1.1 to 73 |
| Fatigue Strength, MPa | 470 to 540 | |
| 320 to 530 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 83 |
| Tensile Strength: Ultimate (UTS), MPa | 790 to 830 | |
| 950 to 1700 |
| Tensile Strength: Yield (Proof), MPa | 690 to 770 | |
| 500 to 1080 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 to 260 | |
| 320 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1400 |
| Melting Onset (Solidus), °C | 1420 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Expansion, µm/m-K | 13 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.3 to 3.8 | |
| 95 |
| Density, g/cm3 | 7.8 to 7.9 | |
| 8.4 |
| Embodied Carbon, kg CO2/kg material | 1.6 to 1.8 | |
| 8.1 |
| Embodied Energy, MJ/kg | 21 to 25 | |
| 110 |
| Embodied Water, L/kg | 48 to 57 | |
| 400 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1280 to 1590 | |
| 590 to 2720 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 24 |
| Strength to Weight: Axial, points | 28 to 29 | |
| 31 to 56 |
| Strength to Weight: Bending, points | 24 to 25 | |
| 25 to 37 |
| Thermal Shock Resistance, points | 23 to 24 | |
| 25 to 44 |