Annealed R31539 Cobalt vs. Rolled And Annealed Type 2 Pewter
Annealed R31539 cobalt belongs to the cobalt alloys classification, while rolled and annealed Type 2 pewter belongs to the otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.
For each property being compared, the top bar is annealed R31539 cobalt and the bottom bar is rolled and annealed Type 2 pewter.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 220 | |
| 52 |
| Poisson's Ratio | 0.29 | |
| 0.35 |
| Shear Modulus, GPa | 86 | |
| 19 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 | |
| 59 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 69 |
| Melting Completion (Liquidus), °C | 1360 | |
| 300 |
| Melting Onset (Solidus), °C | 1290 | |
| 240 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 220 |
| Thermal Expansion, µm/m-K | 13 | |
| 21 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 7.3 |
| Embodied Carbon, kg CO2/kg material | 8.2 | |
| 12 |
| Embodied Energy, MJ/kg | 110 | |
| 210 |
| Embodied Water, L/kg | 530 | |
| 1220 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 | |
| 3.9 |
| Stiffness to Weight: Bending, points | 24 | |
| 17 |
| Strength to Weight: Axial, points | 33 | |
| 2.3 |
| Strength to Weight: Bending, points | 27 | |
| 4.6 |
| Thermal Shock Resistance, points | 24 | |
| 3.9 |
Alloy Composition
| Aluminum (Al), % | 0.3 to 1.0 | |
| 0 |
| Antimony (Sb), % | 0 | |
| 5.0 to 7.5 |
| Arsenic (As), % | 0 | |
| 0 to 0.050 |
| Carbon (C), % | 0 to 0.14 | |
| 0 |
| Chromium (Cr), % | 26 to 30 | |
| 0 |
| Cobalt (Co), % | 57.7 to 68.7 | |
| 0 |
| Copper (Cu), % | 0 | |
| 1.5 to 3.0 |
| Iron (Fe), % | 0 to 0.75 | |
| 0 to 0.015 |
| Lanthanum (La), % | 0.030 to 0.2 | |
| 0 |
| Lead (Pb), % | 0 | |
| 0 to 0.050 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 5.0 to 7.0 | |
| 0 |
| Nickel (Ni), % | 0 to 1.0 | |
| 0 |
| Nitrogen (N), % | 0 to 0.25 | |
| 0 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 |
| Tin (Sn), % | 0 | |
| 90 to 93 |
| Zinc (Zn), % | 0 | |
| 0 to 0.0050 |