EN 1.0038 Steel vs. R30155 Cobalt
Both EN 1.0038 steel and R30155 cobalt are iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is EN 1.0038 steel and the bottom bar is R30155 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 to 120 | |
| 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 210 |
| Elongation at Break, % | 23 to 25 | |
| 34 |
| Fatigue Strength, MPa | 140 to 160 | |
| 310 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 81 |
| Shear Strength, MPa | 240 to 270 | |
| 570 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 430 | |
| 850 |
| Tensile Strength: Yield (Proof), MPa | 200 to 220 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 300 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1470 |
| Melting Onset (Solidus), °C | 1420 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 450 |
| Thermal Conductivity, W/m-K | 49 | |
| 12 |
| Thermal Expansion, µm/m-K | 12 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.1 | |
| 80 |
| Density, g/cm3 | 7.8 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 9.7 |
| Embodied Energy, MJ/kg | 19 | |
| 150 |
| Embodied Water, L/kg | 48 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 72 to 88 | |
| 230 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 110 to 130 | |
| 370 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 23 |
| Strength to Weight: Axial, points | 13 to 15 | |
| 28 |
| Strength to Weight: Bending, points | 15 to 16 | |
| 24 |
| Thermal Diffusivity, mm2/s | 13 | |
| 3.2 |
| Thermal Shock Resistance, points | 12 to 13 | |
| 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.23 | |
| 0.080 to 0.16 |
| Chromium (Cr), % | 0 to 0.3 | |
| 20 to 22.5 |
| Cobalt (Co), % | 0 | |
| 18.5 to 21 |
| Copper (Cu), % | 0 to 0.6 | |
| 0 |
| Iron (Fe), % | 97.1 to 100 | |
| 24.3 to 36.2 |
| Manganese (Mn), % | 0 to 1.5 | |
| 1.0 to 2.0 |
| Molybdenum (Mo), % | 0 to 0.080 | |
| 2.5 to 3.5 |
| Nickel (Ni), % | 0 to 0.3 | |
| 19 to 21 |
| Niobium (Nb), % | 0 | |
| 0.75 to 1.3 |
| Nitrogen (N), % | 0 to 0.014 | |
| 0 to 0.2 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.55 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.045 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0 | |
| 0.75 to 1.3 |
| Tungsten (W), % | 0 | |
| 2.0 to 3.0 |