Commercially Pure Silver vs. R30008 Cobalt
Commercially pure silver belongs to the otherwise unclassified metals classification, while R30008 cobalt belongs to the cobalt alloys. There are 16 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 commercially pure silver and the bottom bar is R30008 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 71 | |
| 210 |
| Elongation at Break, % | 1.1 to 29 | |
| 1.1 to 73 |
| Poisson's Ratio | 0.37 | |
| 0.29 |
| Shear Modulus, GPa | 26 | |
| 83 |
| Tensile Strength: Ultimate (UTS), MPa | 190 to 340 | |
| 950 to 1700 |
Thermal Properties
| Latent Heat of Fusion, J/g | 110 | |
| 320 |
| Melting Completion (Liquidus), °C | 960 | |
| 1400 |
| Melting Onset (Solidus), °C | 960 | |
| 1330 |
| Specific Heat Capacity, J/kg-K | 240 | |
| 450 |
| Thermal Expansion, µm/m-K | 20 | |
| 13 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 8.4 |
Common Calculations
| Stiffness to Weight: Axial, points | 3.8 | |
| 14 |
| Stiffness to Weight: Bending, points | 13 | |
| 24 |
| Strength to Weight: Axial, points | 4.9 to 8.9 | |
| 31 to 56 |
| Strength to Weight: Bending, points | 6.9 to 10 | |
| 25 to 37 |
| Thermal Shock Resistance, points | 9.5 to 17 | |
| 25 to 44 |
Alloy Composition
| Boron (B), % | 0 | |
| 0 to 0.0010 |
| Carbon (C), % | 0 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0 | |
| 18.5 to 21.5 |
| Cobalt (Co), % | 0 | |
| 39 to 42 |
| Iron (Fe), % | 0 | |
| 7.6 to 20 |
| Manganese (Mn), % | 0 | |
| 1.0 to 2.0 |
| Molybdenum (Mo), % | 0 | |
| 6.5 to 7.5 |
| Nickel (Ni), % | 0 | |
| 15 to 18 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0 to 1.2 |
| Silver (Ag), % | 99.9 to 100 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Residuals, % | 0 to 0.1 | |
| 0 |