AISI 440A Stainless Steel vs. S15500 Stainless Steel
Both AISI 440A stainless steel and S15500 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is S15500 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 5.0 to 20 | |
| 6.8 to 16 |
| Fatigue Strength, MPa | 270 to 790 | |
| 350 to 650 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Shear Modulus, GPa | 77 | |
| 75 |
| Shear Strength, MPa | 450 to 1040 | |
| 540 to 870 |
| Tensile Strength: Ultimate (UTS), MPa | 730 to 1790 | |
| 890 to 1490 |
| Tensile Strength: Yield (Proof), MPa | 420 to 1650 | |
| 590 to 1310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 400 | |
| 440 |
| Maximum Temperature: Mechanical, °C | 760 | |
| 820 |
| Melting Completion (Liquidus), °C | 1480 | |
| 1430 |
| Melting Onset (Solidus), °C | 1370 | |
| 1380 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 23 | |
| 17 |
| Thermal Expansion, µm/m-K | 10 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.5 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.9 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.0 | |
| 13 |
| Density, g/cm3 | 7.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.2 | |
| 2.7 |
| Embodied Energy, MJ/kg | 31 | |
| 39 |
| Embodied Water, L/kg | 120 | |
| 130 |
Common Calculations
| PREN (Pitting Resistance) | 18 | |
| 15 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 87 to 120 | |
| 98 to 120 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 26 to 65 | |
| 32 to 53 |
| Strength to Weight: Bending, points | 23 to 43 | |
| 26 to 37 |
| Thermal Diffusivity, mm2/s | 6.2 | |
| 4.6 |
| Thermal Shock Resistance, points | 26 to 65 | |
| 30 to 50 |
Alloy Composition
| Carbon (C), % | 0.6 to 0.75 | |
| 0 to 0.070 |
| Chromium (Cr), % | 16 to 18 | |
| 14 to 15.5 |
| Copper (Cu), % | 0 | |
| 2.5 to 4.5 |
| Iron (Fe), % | 78.4 to 83.4 | |
| 71.9 to 79.9 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 to 0.75 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 3.5 to 5.5 |
| Niobium (Nb), % | 0 | |
| 0.15 to 0.45 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.015 | |
| 0 to 0.030 |