AISI 440A Stainless Steel vs. ASTM B540 Palladium
AISI 440A stainless steel belongs to the iron alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is AISI 440A stainless 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, % | 5.0 to 20 | |
| 1.1 to 14 |
| Fatigue Strength, MPa | 270 to 790 | |
| 350 |
| Poisson's Ratio | 0.28 | |
| 0.38 |
| Shear Modulus, GPa | 77 | |
| 39 |
| Shear Strength, MPa | 450 to 1040 | |
| 500 to 700 |
| Tensile Strength: Ultimate (UTS), MPa | 730 to 1790 | |
| 830 to 1240 |
| Tensile Strength: Yield (Proof), MPa | 420 to 1650 | |
| 620 to 1000 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 140 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1220 |
| Melting Onset (Solidus), °C | 1370 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 240 |
| Thermal Expansion, µm/m-K | 10 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 4.9 to 5.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 3.5 to 3.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 120 | |
| 13 to 100 |
| Stiffness to Weight: Axial, points | 14 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 25 | |
| 12 |
| Strength to Weight: Axial, points | 26 to 65 | |
| 18 to 27 |
| Strength to Weight: Bending, points | 23 to 43 | |
| 15 to 20 |
| Thermal Shock Resistance, points | 26 to 65 | |
| 41 to 61 |
Alloy Composition
| Carbon (C), % | 0.6 to 0.75 | |
| 0 |
| Chromium (Cr), % | 16 to 18 | |
| 0 |
| Copper (Cu), % | 0 | |
| 13.5 to 14.5 |
| Gold (Au), % | 0 | |
| 9.5 to 10.5 |
| Iron (Fe), % | 78.4 to 83.4 | |
| 0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 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 1.0 | |
| 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 |