EN 1.0225 Steel vs. R30021 Cobalt
EN 1.0225 steel belongs to the iron alloys classification, while R30021 cobalt belongs to the cobalt alloys. 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 1.0225 steel and the bottom bar is R30021 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 190 | |
220 |
Elongation at Break, % | 6.7 to 24 | |
9.0 |
Fatigue Strength, MPa | 170 to 220 | |
250 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 73 | |
86 |
Tensile Strength: Ultimate (UTS), MPa | 440 to 500 | |
700 |
Tensile Strength: Yield (Proof), MPa | 230 to 380 | |
500 |
Thermal Properties
Latent Heat of Fusion, J/g | 250 | |
330 |
Melting Completion (Liquidus), °C | 1460 | |
1350 |
Melting Onset (Solidus), °C | 1420 | |
1190 |
Specific Heat Capacity, J/kg-K | 470 | |
450 |
Thermal Conductivity, W/m-K | 52 | |
15 |
Thermal Expansion, µm/m-K | 12 | |
11 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 7.1 | |
1.9 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 8.1 | |
2.1 |
Otherwise Unclassified Properties
Density, g/cm3 | 7.8 | |
8.4 |
Embodied Carbon, kg CO2/kg material | 1.4 | |
8.0 |
Embodied Energy, MJ/kg | 18 | |
110 |
Embodied Water, L/kg | 46 | |
520 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 31 to 95 | |
57 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 to 390 | |
570 |
Stiffness to Weight: Axial, points | 13 | |
15 |
Stiffness to Weight: Bending, points | 24 | |
24 |
Strength to Weight: Axial, points | 16 to 18 | |
23 |
Strength to Weight: Bending, points | 16 to 18 | |
21 |
Thermal Diffusivity, mm2/s | 14 | |
3.8 |
Thermal Shock Resistance, points | 14 to 16 | |
21 |
Alloy Composition
Carbon (C), % | 0 to 0.21 | |
0.2 to 0.35 |
Chromium (Cr), % | 0 | |
26 to 29 |
Cobalt (Co), % | 0 | |
61.7 to 67.3 |
Iron (Fe), % | 98 to 100 | |
0 to 3.0 |
Manganese (Mn), % | 0 to 1.4 | |
0 |
Molybdenum (Mo), % | 0 | |
4.5 to 6.0 |
Nickel (Ni), % | 0 | |
2.0 to 3.0 |
Phosphorus (P), % | 0 to 0.045 | |
0 |
Silicon (Si), % | 0 to 0.35 | |
0 to 1.5 |
Sulfur (S), % | 0 to 0.045 | |
0 |