S15500 Stainless Steel vs. AISI 431 Stainless Steel
Both S15500 stainless steel and AISI 431 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common. There are 34 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is S15500 stainless steel and the bottom bar is AISI 431 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 290 to 430 | |
| 250 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 6.8 to 16 | |
| 15 to 17 |
| Fatigue Strength, MPa | 350 to 650 | |
| 430 to 610 |
| Poisson's Ratio | 0.28 | |
| 0.28 |
| Rockwell C Hardness | 27 to 46 | |
| 26 |
| Shear Modulus, GPa | 75 | |
| 77 |
| Shear Strength, MPa | 540 to 870 | |
| 550 to 840 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1490 | |
| 890 to 1380 |
| Tensile Strength: Yield (Proof), MPa | 590 to 1310 | |
| 710 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 280 |
| Maximum Temperature: Corrosion, °C | 440 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 820 | |
| 850 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1510 |
| Melting Onset (Solidus), °C | 1380 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 480 |
| Thermal Conductivity, W/m-K | 17 | |
| 26 |
| Thermal Expansion, µm/m-K | 11 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 2.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 9.0 |
| Density, g/cm3 | 7.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 2.2 |
| Embodied Energy, MJ/kg | 39 | |
| 31 |
| Embodied Water, L/kg | 130 | |
| 120 |
Common Calculations
| PREN (Pitting Resistance) | 15 | |
| 16 |
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 120 | |
| 140 to 180 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 890 to 4460 | |
| 1270 to 2770 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 25 | |
| 25 |
| Strength to Weight: Axial, points | 32 to 53 | |
| 32 to 50 |
| Strength to Weight: Bending, points | 26 to 37 | |
| 27 to 36 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 7.0 |
| Thermal Shock Resistance, points | 30 to 50 | |
| 28 to 43 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0 to 0.2 |
| Chromium (Cr), % | 14 to 15.5 | |
| 15 to 17 |
| Copper (Cu), % | 2.5 to 4.5 | |
| 0 |
| Iron (Fe), % | 71.9 to 79.9 | |
| 78.2 to 83.8 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 1.3 to 2.5 |
| Niobium (Nb), % | 0.15 to 0.45 | |
| 0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 1.0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.030 |