EN 1.4646 Stainless Steel vs. R30016 Cobalt
EN 1.4646 stainless steel belongs to the iron alloys classification, while R30016 cobalt belongs to the cobalt alloys. They have a modest 23% of their average alloy composition in common, which, by itself, doesn't mean much. There are 24 material properties with values for both materials. Properties with values for just one material (14, in this case) are not shown.
For each property being compared, the top bar is EN 1.4646 stainless steel and the bottom bar is R30016 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 200 | |
220 |
Elongation at Break, % | 34 | |
8.4 |
Fatigue Strength, MPa | 340 | |
290 |
Impact Strength: V-Notched Charpy, J | 90 | |
8.0 |
Poisson's Ratio | 0.28 | |
0.28 |
Shear Modulus, GPa | 77 | |
85 |
Tensile Strength: Ultimate (UTS), MPa | 750 | |
1010 |
Tensile Strength: Yield (Proof), MPa | 430 | |
580 |
Thermal Properties
Latent Heat of Fusion, J/g | 290 | |
320 |
Melting Completion (Liquidus), °C | 1390 | |
1360 |
Melting Onset (Solidus), °C | 1340 | |
1270 |
Specific Heat Capacity, J/kg-K | 480 | |
450 |
Thermal Expansion, µm/m-K | 17 | |
14 |
Otherwise Unclassified Properties
Density, g/cm3 | 7.7 | |
8.5 |
Embodied Carbon, kg CO2/kg material | 2.8 | |
7.7 |
Embodied Energy, MJ/kg | 41 | |
110 |
Embodied Water, L/kg | 160 | |
500 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 220 | |
72 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 460 | |
770 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 25 | |
24 |
Strength to Weight: Axial, points | 27 | |
33 |
Strength to Weight: Bending, points | 24 | |
26 |
Thermal Shock Resistance, points | 16 | |
24 |
Alloy Composition
Carbon (C), % | 0.020 to 0.1 | |
0.9 to 1.4 |
Chromium (Cr), % | 17 to 19 | |
28 to 32 |
Cobalt (Co), % | 0 | |
49.6 to 66.9 |
Copper (Cu), % | 1.5 to 3.0 | |
0 |
Iron (Fe), % | 59 to 67.3 | |
0 to 3.0 |
Manganese (Mn), % | 10.5 to 12.5 | |
0.5 to 2.0 |
Molybdenum (Mo), % | 0 to 0.5 | |
0 to 1.5 |
Nickel (Ni), % | 3.5 to 4.5 | |
0 to 3.0 |
Nitrogen (N), % | 0.2 to 0.3 | |
0 |
Phosphorus (P), % | 0 to 0.050 | |
0 |
Silicon (Si), % | 0 to 1.0 | |
0.2 to 2.0 |
Sulfur (S), % | 0 to 0.015 | |
0 |
Tungsten (W), % | 0 | |
3.5 to 5.5 |