EN 2.4964 Cobalt vs. EN 1.4971 Stainless Steel
EN 2.4964 cobalt belongs to the cobalt alloys classification, while EN 1.4971 stainless steel belongs to the iron alloys. They have 55% of their average alloy composition in common. There are 25 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 EN 2.4964 cobalt and the bottom bar is EN 1.4971 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 220 | |
210 |
Elongation at Break, % | 40 | |
34 |
Fatigue Strength, MPa | 220 | |
270 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 86 | |
81 |
Tensile Strength: Ultimate (UTS), MPa | 960 | |
800 |
Tensile Strength: Yield (Proof), MPa | 390 | |
340 |
Thermal Properties
Latent Heat of Fusion, J/g | 290 | |
300 |
Melting Completion (Liquidus), °C | 1630 | |
1460 |
Melting Onset (Solidus), °C | 1550 | |
1410 |
Specific Heat Capacity, J/kg-K | 400 | |
450 |
Thermal Conductivity, W/m-K | 15 | |
13 |
Thermal Expansion, µm/m-K | 12 | |
15 |
Otherwise Unclassified Properties
Density, g/cm3 | 9.6 | |
8.4 |
Embodied Carbon, kg CO2/kg material | 9.8 | |
7.6 |
Embodied Energy, MJ/kg | 140 | |
110 |
Embodied Water, L/kg | 450 | |
300 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 310 | |
220 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 340 | |
280 |
Stiffness to Weight: Axial, points | 13 | |
14 |
Stiffness to Weight: Bending, points | 21 | |
24 |
Strength to Weight: Axial, points | 28 | |
26 |
Strength to Weight: Bending, points | 23 | |
23 |
Thermal Diffusivity, mm2/s | 3.9 | |
3.4 |
Thermal Shock Resistance, points | 25 | |
19 |
Alloy Composition
Carbon (C), % | 0.050 to 0.15 | |
0.080 to 0.16 |
Chromium (Cr), % | 19 to 21 | |
20 to 22.5 |
Cobalt (Co), % | 46.4 to 58 | |
18.5 to 21 |
Iron (Fe), % | 0 to 3.0 | |
24.3 to 37.1 |
Manganese (Mn), % | 0 to 2.0 | |
0 to 2.0 |
Molybdenum (Mo), % | 0 | |
2.5 to 3.5 |
Nickel (Ni), % | 9.0 to 11 | |
19 to 21 |
Niobium (Nb), % | 0 | |
0.75 to 1.3 |
Nitrogen (N), % | 0 | |
0.1 to 0.2 |
Phosphorus (P), % | 0 to 0.020 | |
0 to 0.035 |
Silicon (Si), % | 0 to 0.4 | |
0 to 1.0 |
Sulfur (S), % | 0 to 0.015 | |
0 to 0.015 |
Tungsten (W), % | 14 to 16 | |
2.0 to 3.0 |