ASTM Grade HP Steel vs. Commercially Pure Palladium
ASTM grade HP steel belongs to the iron alloys classification, while commercially pure palladium belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (18, in this case) are not shown.
For each property being compared, the top bar is ASTM grade HP steel and the bottom bar is commercially pure palladium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 120 |
| Elongation at Break, % | 5.1 | |
| 1.1 to 11 |
| Poisson's Ratio | 0.28 | |
| 0.39 |
| Shear Modulus, GPa | 78 | |
| 43 |
| Tensile Strength: Ultimate (UTS), MPa | 490 | |
| 200 to 380 |
Thermal Properties
| Latent Heat of Fusion, J/g | 320 | |
| 160 |
| Melting Completion (Liquidus), °C | 1370 | |
| 1550 |
| Melting Onset (Solidus), °C | 1330 | |
| 1550 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 240 |
| Thermal Expansion, µm/m-K | 16 | |
| 12 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 12 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 5.6 |
| Stiffness to Weight: Bending, points | 25 | |
| 14 |
| Strength to Weight: Axial, points | 17 | |
| 4.5 to 8.8 |
| Strength to Weight: Bending, points | 17 | |
| 6.2 to 9.7 |
| Thermal Shock Resistance, points | 11 | |
| 9.8 to 19 |
Alloy Composition
| Carbon (C), % | 0.35 to 0.75 | |
| 0 |
| Chromium (Cr), % | 24 to 28 | |
| 0 |
| Iron (Fe), % | 29.2 to 42.7 | |
| 0 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 33 to 37 | |
| 0 |
| Palladium (Pd), % | 0 | |
| 99.8 to 100 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Silicon (Si), % | 0 to 2.5 | |
| 0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.2 |