AISI 431 Stainless Steel vs. ASTM B540 Palladium
AISI 431 stainless steel belongs to the iron alloys classification, while ASTM B540 palladium belongs to the otherwise unclassified metals. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.
For each property being compared, the top bar is AISI 431 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, % | 15 to 17 | |
| 1.1 to 14 |
| Fatigue Strength, MPa | 430 to 610 | |
| 350 |
| Poisson's Ratio | 0.28 | |
| 0.38 |
| Shear Modulus, GPa | 77 | |
| 39 |
| Shear Strength, MPa | 550 to 840 | |
| 500 to 700 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1380 | |
| 830 to 1240 |
| Tensile Strength: Yield (Proof), MPa | 710 to 1040 | |
| 620 to 1000 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 140 |
| Melting Completion (Liquidus), °C | 1510 | |
| 1220 |
| Melting Onset (Solidus), °C | 1450 | |
| 1020 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 240 |
| Thermal Expansion, µm/m-K | 12 | |
| 14 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.6 | |
| 4.9 to 5.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 3.0 | |
| 3.5 to 3.9 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.7 | |
| 13 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 140 to 180 | |
| 13 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 1270 to 2770 | |
| 1790 to 4660 |
| Stiffness to Weight: Axial, points | 14 | |
| 4.7 |
| Stiffness to Weight: Bending, points | 25 | |
| 12 |
| Strength to Weight: Axial, points | 32 to 50 | |
| 18 to 27 |
| Strength to Weight: Bending, points | 27 to 36 | |
| 15 to 20 |
| Thermal Shock Resistance, points | 28 to 43 | |
| 41 to 61 |
Alloy Composition
| Carbon (C), % | 0 to 0.2 | |
| 0 |
| Chromium (Cr), % | 15 to 17 | |
| 0 |
| Copper (Cu), % | 0 | |
| 13.5 to 14.5 |
| Gold (Au), % | 0 | |
| 9.5 to 10.5 |
| Iron (Fe), % | 78.2 to 83.8 | |
| 0 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 |
| Nickel (Ni), % | 1.3 to 2.5 | |
| 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 0.030 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0.8 to 1.2 |
| Residuals, % | 0 | |
| 0 to 0.3 |