R30008 Cobalt vs. ASTM B540 Palladium
R30008 cobalt belongs to the cobalt alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 19 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 ASTM B540 palladium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 210 | |
| 110 |
| Elongation at Break, % | 1.1 to 73 | |
| 1.1 to 14 |
| Fatigue Strength, MPa | 320 to 530 | |
| 350 |
| Poisson's Ratio | 0.29 | |
| 0.38 |
| Shear Modulus, GPa | 83 | |
| 39 |
| Tensile Strength: Ultimate (UTS), MPa | 950 to 1700 | |
| 830 to 1240 |
| Tensile Strength: Yield (Proof), MPa | 500 to 1080 | |
| 620 to 1000 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 140 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1220 |
| Melting Onset (Solidus), °C | 1330 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 450 | |
| 240 |
| Thermal Expansion, µm/m-K | 13 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 8.4 | |
| 13 |
Common Calculations
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 590 to 2720 | |
| 1790 to 4660 |
| Stiffness to Weight: Axial, points | 14 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 24 | |
| 12 |
| Strength to Weight: Axial, points | 31 to 56 | |
| 18 to 27 |
| Strength to Weight: Bending, points | 25 to 37 | |
| 15 to 20 |
| Thermal Shock Resistance, points | 25 to 44 | |
| 41 to 61 |
Alloy Composition
| Boron (B), % | 0 to 0.0010 | |
| 0 |
| Carbon (C), % | 0 to 0.15 | |
| 0 |
| Chromium (Cr), % | 18.5 to 21.5 | |
| 0 |
| Cobalt (Co), % | 39 to 42 | |
| 0 |
| Copper (Cu), % | 0 | |
| 13.5 to 14.5 |
| Gold (Au), % | 0 | |
| 9.5 to 10.5 |
| Iron (Fe), % | 7.6 to 20 | |
| 0 |
| Manganese (Mn), % | 1.0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 6.5 to 7.5 | |
| 0 |
| Nickel (Ni), % | 15 to 18 | |
| 0 |
| Palladium (Pd), % | 0 | |
| 34 to 36 |
| Phosphorus (P), % | 0 to 0.015 | |
| 0 |
| Platinum (Pt), % | 0 | |
| 9.5 to 10.5 |
| Silicon (Si), % | 0 to 1.2 | |
| 0 |
| Silver (Ag), % | 0 | |
| 29 to 31 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0.8 to 1.2 |
| Residuals, % | 0 | |
| 0 to 0.3 |