ASTM Grade HN Steel vs. ASTM B540 Palladium
ASTM grade HN steel belongs to the iron alloys classification, while ASTM B540 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 HN steel and the bottom bar is ASTM B540 palladium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 110 |
| Elongation at Break, % | 9.0 | |
| 1.1 to 14 |
| Poisson's Ratio | 0.28 | |
| 0.38 |
| Shear Modulus, GPa | 77 | |
| 39 |
| Tensile Strength: Ultimate (UTS), MPa | 500 | |
| 830 to 1240 |
Thermal Properties
| Latent Heat of Fusion, J/g | 310 | |
| 140 |
| Melting Completion (Liquidus), °C | 1400 | |
| 1220 |
| Melting Onset (Solidus), °C | 1350 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 240 |
| Thermal Expansion, µm/m-K | 16 | |
| 14 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.9 | |
| 13 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 25 | |
| 12 |
| Strength to Weight: Axial, points | 17 | |
| 18 to 27 |
| Strength to Weight: Bending, points | 18 | |
| 15 to 20 |
| Thermal Shock Resistance, points | 11 | |
| 41 to 61 |
Alloy Composition
| Carbon (C), % | 0.2 to 0.5 | |
| 0 |
| Chromium (Cr), % | 19 to 23 | |
| 0 |
| Copper (Cu), % | 0 | |
| 13.5 to 14.5 |
| Gold (Au), % | 0 | |
| 9.5 to 10.5 |
| Iron (Fe), % | 44.9 to 57.8 | |
| 0 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.5 | |
| 0 |
| Nickel (Ni), % | 23 to 27 | |
| 0 |
| Palladium (Pd), % | 0 | |
| 34 to 36 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Platinum (Pt), % | 0 | |
| 9.5 to 10.5 |
| Silicon (Si), % | 0 to 2.0 | |
| 0 |
| Silver (Ag), % | 0 | |
| 29 to 31 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0.8 to 1.2 |
| Residuals, % | 0 | |
| 0 to 0.3 |