R30816 Cobalt vs. EN 1.4107 Stainless Steel
R30816 cobalt belongs to the cobalt alloys classification, while EN 1.4107 stainless steel belongs to the iron alloys. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.
For each property being compared, the top bar is R30816 cobalt and the bottom bar is EN 1.4107 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 210 | |
190 |
Elongation at Break, % | 23 | |
18 to 21 |
Fatigue Strength, MPa | 250 | |
260 to 350 |
Poisson's Ratio | 0.3 | |
0.28 |
Shear Modulus, GPa | 81 | |
76 |
Tensile Strength: Ultimate (UTS), MPa | 1020 | |
620 to 700 |
Tensile Strength: Yield (Proof), MPa | 460 | |
400 to 570 |
Thermal Properties
Latent Heat of Fusion, J/g | 300 | |
270 |
Melting Completion (Liquidus), °C | 1540 | |
1450 |
Melting Onset (Solidus), °C | 1460 | |
1410 |
Specific Heat Capacity, J/kg-K | 420 | |
480 |
Thermal Conductivity, W/m-K | 13 | |
27 |
Thermal Expansion, µm/m-K | 12 | |
10 |
Otherwise Unclassified Properties
Density, g/cm3 | 9.1 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 20 | |
2.1 |
Embodied Energy, MJ/kg | 320 | |
30 |
Embodied Water, L/kg | 440 | |
100 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
110 to 120 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 510 | |
420 to 840 |
Stiffness to Weight: Axial, points | 13 | |
14 |
Stiffness to Weight: Bending, points | 22 | |
25 |
Strength to Weight: Axial, points | 31 | |
22 to 25 |
Strength to Weight: Bending, points | 25 | |
21 to 22 |
Thermal Diffusivity, mm2/s | 3.3 | |
7.2 |
Thermal Shock Resistance, points | 28 | |
22 to 25 |
Alloy Composition
Carbon (C), % | 0.32 to 0.42 | |
0 to 0.1 |
Chromium (Cr), % | 19 to 21 | |
11.5 to 12.5 |
Cobalt (Co), % | 40 to 49.8 | |
0 |
Copper (Cu), % | 0 | |
0 to 0.3 |
Iron (Fe), % | 0 to 5.0 | |
83.8 to 87.2 |
Manganese (Mn), % | 1.0 to 2.0 | |
0.5 to 0.8 |
Molybdenum (Mo), % | 3.5 to 4.5 | |
0 to 0.5 |
Nickel (Ni), % | 19 to 21 | |
0.8 to 1.5 |
Niobium (Nb), % | 3.5 to 4.5 | |
0 |
Phosphorus (P), % | 0 to 0.040 | |
0 to 0.030 |
Silicon (Si), % | 0 to 1.0 | |
0 to 0.4 |
Sulfur (S), % | 0 to 0.030 | |
0 to 0.020 |
Tantalum (Ta), % | 3.5 to 4.5 | |
0 |
Tungsten (W), % | 3.5 to 4.5 | |
0 |
Vanadium (V), % | 0 | |
0 to 0.080 |