ASTM B540 Palladium vs. R30075 Cobalt
ASTM B540 palladium belongs to the otherwise unclassified metals classification, while R30075 cobalt belongs to the cobalt alloys. There are 22 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.
For each property being compared, the top bar is ASTM B540 palladium and the bottom bar is R30075 cobalt.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 210 to 250 |
| Elongation at Break, % | 1.1 to 14 | |
| 12 |
| Fatigue Strength, MPa | 350 | |
| 250 to 840 |
| Poisson's Ratio | 0.38 | |
| 0.29 |
| Shear Modulus, GPa | 39 | |
| 82 to 98 |
| Tensile Strength: Ultimate (UTS), MPa | 830 to 1240 | |
| 780 to 1280 |
| Tensile Strength: Yield (Proof), MPa | 620 to 1000 | |
| 480 to 840 |
Thermal Properties
| Latent Heat of Fusion, J/g | 140 | |
| 320 |
| Melting Completion (Liquidus), °C | 1220 | |
| 1360 |
| Melting Onset (Solidus), °C | 1020 | |
| 1290 |
| Specific Heat Capacity, J/kg-K | 240 | |
| 450 |
| Thermal Expansion, µm/m-K | 14 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 4.9 to 5.5 | |
| 2.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.5 to 3.9 | |
| 2.1 |
Otherwise Unclassified Properties
| Density, g/cm3 | 13 | |
| 8.4 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 13 to 100 | |
| 84 to 140 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1790 to 4660 | |
| 560 to 1410 |
| Stiffness to Weight: Axial, points | 4.7 | |
| 14 to 17 |
| Stiffness to Weight: Bending, points | 12 | |
| 24 to 25 |
| Strength to Weight: Axial, points | 18 to 27 | |
| 26 to 42 |
| Strength to Weight: Bending, points | 15 to 20 | |
| 22 to 31 |
| Thermal Shock Resistance, points | 41 to 61 | |
| 21 to 29 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 0 to 0.1 |
| Boron (B), % | 0 | |
| 0 to 0.010 |
| Carbon (C), % | 0 | |
| 0 to 0.35 |
| Chromium (Cr), % | 0 | |
| 27 to 30 |
| Cobalt (Co), % | 0 | |
| 58.7 to 68 |
| Copper (Cu), % | 13.5 to 14.5 | |
| 0 |
| Gold (Au), % | 9.5 to 10.5 | |
| 0 |
| Iron (Fe), % | 0 | |
| 0 to 0.75 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 5.0 to 7.0 |
| Nickel (Ni), % | 0 | |
| 0 to 0.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.25 |
| Palladium (Pd), % | 34 to 36 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.020 |
| Platinum (Pt), % | 9.5 to 10.5 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Silver (Ag), % | 29 to 31 | |
| 0 |
| Sulfur (S), % | 0 | |
| 0 to 0.010 |
| Titanium (Ti), % | 0 | |
| 0 to 0.1 |
| Tungsten (W), % | 0 | |
| 0 to 0.2 |
| Zinc (Zn), % | 0.8 to 1.2 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |