R30016 Cobalt vs. AISI 317LN Stainless Steel
R30016 cobalt belongs to the cobalt alloys classification, while AISI 317LN stainless steel belongs to the iron alloys. They have a modest 24% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is R30016 cobalt and the bottom bar is AISI 317LN stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 220 | |
200 |
Elongation at Break, % | 8.4 | |
45 |
Fatigue Strength, MPa | 290 | |
250 |
Poisson's Ratio | 0.28 | |
0.28 |
Shear Modulus, GPa | 85 | |
79 |
Tensile Strength: Ultimate (UTS), MPa | 1010 | |
620 |
Tensile Strength: Yield (Proof), MPa | 580 | |
270 |
Thermal Properties
Latent Heat of Fusion, J/g | 320 | |
290 |
Melting Completion (Liquidus), °C | 1360 | |
1450 |
Melting Onset (Solidus), °C | 1270 | |
1400 |
Specific Heat Capacity, J/kg-K | 450 | |
470 |
Thermal Conductivity, W/m-K | 15 | |
14 |
Thermal Expansion, µm/m-K | 14 | |
16 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 1.9 | |
2.2 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
2.4 |
Otherwise Unclassified Properties
Density, g/cm3 | 8.5 | |
7.9 |
Embodied Carbon, kg CO2/kg material | 7.7 | |
4.3 |
Embodied Energy, MJ/kg | 110 | |
59 |
Embodied Water, L/kg | 500 | |
160 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 72 | |
220 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 770 | |
190 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 24 | |
25 |
Strength to Weight: Axial, points | 33 | |
22 |
Strength to Weight: Bending, points | 26 | |
20 |
Thermal Diffusivity, mm2/s | 3.9 | |
3.9 |
Thermal Shock Resistance, points | 24 | |
14 |
Alloy Composition
Carbon (C), % | 0.9 to 1.4 | |
0 to 0.030 |
Chromium (Cr), % | 28 to 32 | |
18 to 20 |
Cobalt (Co), % | 49.6 to 66.9 | |
0 |
Iron (Fe), % | 0 to 3.0 | |
57.9 to 67.9 |
Manganese (Mn), % | 0.5 to 2.0 | |
0 to 2.0 |
Molybdenum (Mo), % | 0 to 1.5 | |
3.0 to 4.0 |
Nickel (Ni), % | 0 to 3.0 | |
11 to 15 |
Nitrogen (N), % | 0 | |
0.1 to 0.22 |
Phosphorus (P), % | 0 | |
0 to 0.045 |
Silicon (Si), % | 0.2 to 2.0 | |
0 to 0.75 |
Sulfur (S), % | 0 | |
0 to 0.030 |
Tungsten (W), % | 3.5 to 5.5 | |
0 |