R30008 Cobalt vs. EN 1.4568 Stainless Steel
R30008 cobalt belongs to the cobalt alloys classification, while EN 1.4568 stainless steel belongs to the iron alloys. They have a modest 39% of their average alloy composition in common, which, by itself, doesn't mean much. There are 23 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 R30008 cobalt and the bottom bar is EN 1.4568 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 210 | |
200 |
Elongation at Break, % | 1.1 to 73 | |
2.3 to 21 |
Fatigue Strength, MPa | 320 to 530 | |
220 to 670 |
Poisson's Ratio | 0.29 | |
0.28 |
Shear Modulus, GPa | 83 | |
76 |
Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
830 to 1620 |
Tensile Strength: Yield (Proof), MPa | 500 to 1080 | |
330 to 1490 |
Thermal Properties
Latent Heat of Fusion, J/g | 320 | |
280 |
Melting Completion (Liquidus), °C | 1400 | |
1420 |
Melting Onset (Solidus), °C | 1330 | |
1380 |
Specific Heat Capacity, J/kg-K | 450 | |
480 |
Thermal Expansion, µm/m-K | 13 | |
13 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 95 | |
13 |
Density, g/cm3 | 8.4 | |
7.7 |
Embodied Carbon, kg CO2/kg material | 8.1 | |
2.8 |
Embodied Energy, MJ/kg | 110 | |
40 |
Embodied Water, L/kg | 400 | |
140 |
Common Calculations
Resilience: Unit (Modulus of Resilience), kJ/m3 | 590 to 2720 | |
290 to 5710 |
Stiffness to Weight: Axial, points | 14 | |
14 |
Stiffness to Weight: Bending, points | 24 | |
25 |
Strength to Weight: Axial, points | 31 to 56 | |
30 to 58 |
Strength to Weight: Bending, points | 25 to 37 | |
25 to 40 |
Thermal Shock Resistance, points | 25 to 44 | |
23 to 46 |
Alloy Composition
Aluminum (Al), % | 0 | |
0.7 to 1.5 |
Boron (B), % | 0 to 0.0010 | |
0 |
Carbon (C), % | 0 to 0.15 | |
0 to 0.090 |
Chromium (Cr), % | 18.5 to 21.5 | |
16 to 18 |
Cobalt (Co), % | 39 to 42 | |
0 |
Iron (Fe), % | 7.6 to 20 | |
70.9 to 76.8 |
Manganese (Mn), % | 1.0 to 2.0 | |
0 to 1.0 |
Molybdenum (Mo), % | 6.5 to 7.5 | |
0 |
Nickel (Ni), % | 15 to 18 | |
6.5 to 7.8 |
Phosphorus (P), % | 0 to 0.015 | |
0 to 0.040 |
Silicon (Si), % | 0 to 1.2 | |
0 to 0.7 |
Sulfur (S), % | 0 to 0.015 | |
0 to 0.015 |