70Ag-30Ni Alloy vs. R30035 Cobalt
70Ag-30Ni alloy belongs to the otherwise unclassified metals classification, while R30035 cobalt belongs to the cobalt alloys. They have a modest 30% of their average alloy composition in common, which, by itself, doesn't mean much. There are 17 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 70Ag-30Ni alloy and the bottom bar is R30035 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 220 to 230 |
| Poisson's Ratio | 0.35 | |
| 0.29 |
| Shear Modulus, GPa | 39 | |
| 84 to 89 |
| Tensile Strength: Ultimate (UTS), MPa | 320 to 530 | |
| 900 to 1900 |
Thermal Properties
| Latent Heat of Fusion, J/g | 170 | |
| 320 |
| Melting Completion (Liquidus), °C | 960 | |
| 1440 |
| Melting Onset (Solidus), °C | 960 | |
| 1320 |
| Specific Heat Capacity, J/kg-K | 300 | |
| 440 |
| Thermal Expansion, µm/m-K | 17 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 69 | |
| 1.7 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 62 | |
| 1.8 |
Otherwise Unclassified Properties
| Density, g/cm3 | 10 | |
| 8.7 |
Common Calculations
| Stiffness to Weight: Axial, points | 5.8 | |
| 14 to 15 |
| Stiffness to Weight: Bending, points | 16 | |
| 23 to 24 |
| Strength to Weight: Axial, points | 8.8 to 15 | |
| 29 to 61 |
| Strength to Weight: Bending, points | 10 to 15 | |
| 24 to 39 |
| Thermal Shock Resistance, points | 13 to 21 | |
| 23 to 46 |
Alloy Composition
| Boron (B), % | 0 | |
| 0 to 0.015 |
| Carbon (C), % | 0 | |
| 0 to 0.025 |
| Chromium (Cr), % | 0 | |
| 19 to 21 |
| Cobalt (Co), % | 0 | |
| 29.1 to 39 |
| Iron (Fe), % | 0 | |
| 0 to 1.0 |
| Manganese (Mn), % | 0 | |
| 0 to 0.15 |
| Molybdenum (Mo), % | 0 | |
| 9.0 to 10.5 |
| Nickel (Ni), % | 28.8 to 31 | |
| 33 to 37 |
| Phosphorus (P), % | 0 | |
| 0 to 0.015 |
| Silicon (Si), % | 0 | |
| 0 to 0.15 |
| Silver (Ag), % | 69 to 71 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0 to 1.0 |
| Residuals, % | 0 to 0.2 | |
| 0 |