EN 1.4612 Stainless Steel vs. R30155 Cobalt
Both EN 1.4612 stainless steel and R30155 cobalt are iron alloys. They have 55% of their average alloy composition in common. There are 27 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 1.4612 stainless steel and the bottom bar is R30155 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 210 |
| Elongation at Break, % | 11 | |
| 34 |
| Fatigue Strength, MPa | 860 to 950 | |
| 310 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Shear Modulus, GPa | 76 | |
| 81 |
| Shear Strength, MPa | 1010 to 1110 | |
| 570 |
| Tensile Strength: Ultimate (UTS), MPa | 1690 to 1850 | |
| 850 |
| Tensile Strength: Yield (Proof), MPa | 1570 to 1730 | |
| 390 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 300 |
| Maximum Temperature: Corrosion, °C | 450 | |
| 570 |
| Maximum Temperature: Mechanical, °C | 790 | |
| 1100 |
| Melting Completion (Liquidus), °C | 1450 | |
| 1470 |
| Melting Onset (Solidus), °C | 1400 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 450 |
| Thermal Expansion, µm/m-K | 11 | |
| 14 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 16 | |
| 80 |
| Density, g/cm3 | 7.9 | |
| 8.5 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 9.7 |
| Embodied Energy, MJ/kg | 50 | |
| 150 |
| Embodied Water, L/kg | 140 | |
| 300 |
Common Calculations
| PREN (Pitting Resistance) | 19 | |
| 37 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 to 210 | |
| 230 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 23 |
| Strength to Weight: Axial, points | 60 to 65 | |
| 28 |
| Strength to Weight: Bending, points | 40 to 43 | |
| 24 |
| Thermal Shock Resistance, points | 58 to 63 | |
| 21 |
Alloy Composition
| Aluminum (Al), % | 1.4 to 1.8 | |
| 0 |
| Carbon (C), % | 0 to 0.015 | |
| 0.080 to 0.16 |
| Chromium (Cr), % | 11 to 12.5 | |
| 20 to 22.5 |
| Cobalt (Co), % | 0 | |
| 18.5 to 21 |
| Iron (Fe), % | 71.5 to 75.5 | |
| 24.3 to 36.2 |
| Manganese (Mn), % | 0 to 0.1 | |
| 1.0 to 2.0 |
| Molybdenum (Mo), % | 1.8 to 2.3 | |
| 2.5 to 3.5 |
| Nickel (Ni), % | 10.2 to 11.3 | |
| 19 to 21 |
| Niobium (Nb), % | 0 | |
| 0.75 to 1.3 |
| Nitrogen (N), % | 0 to 0.010 | |
| 0 to 0.2 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.1 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.0050 | |
| 0 to 0.030 |
| Tantalum (Ta), % | 0 | |
| 0.75 to 1.3 |
| Titanium (Ti), % | 0.2 to 0.5 | |
| 0 |
| Tungsten (W), % | 0 | |
| 2.0 to 3.0 |