S15500 Stainless Steel vs. SAE-AISI 1140 Steel
Both S15500 stainless steel and SAE-AISI 1140 steel are iron alloys. They have 76% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.
For each property being compared, the top bar is S15500 stainless steel and the bottom bar is SAE-AISI 1140 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 290 to 430 | |
| 170 to 180 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 6.8 to 16 | |
| 14 to 18 |
| Fatigue Strength, MPa | 350 to 650 | |
| 230 to 370 |
| Poisson's Ratio | 0.28 | |
| 0.29 |
| Reduction in Area, % | 17 to 40 | |
| 39 to 46 |
| Shear Modulus, GPa | 75 | |
| 72 |
| Shear Strength, MPa | 540 to 870 | |
| 370 to 420 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1490 | |
| 600 to 700 |
| Tensile Strength: Yield (Proof), MPa | 590 to 1310 | |
| 340 to 570 |
Thermal Properties
| Latent Heat of Fusion, J/g | 280 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 820 | |
| 400 |
| Melting Completion (Liquidus), °C | 1430 | |
| 1460 |
| Melting Onset (Solidus), °C | 1380 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 17 | |
| 51 |
| Thermal Expansion, µm/m-K | 11 | |
| 13 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 2.2 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.5 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 13 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 2.7 | |
| 1.4 |
| Embodied Energy, MJ/kg | 39 | |
| 18 |
| Embodied Water, L/kg | 130 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 98 to 120 | |
| 89 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 890 to 4460 | |
| 310 to 870 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 32 to 53 | |
| 21 to 25 |
| Strength to Weight: Bending, points | 26 to 37 | |
| 20 to 22 |
| Thermal Diffusivity, mm2/s | 4.6 | |
| 14 |
| Thermal Shock Resistance, points | 30 to 50 | |
| 18 to 21 |
Alloy Composition
| Carbon (C), % | 0 to 0.070 | |
| 0.37 to 0.44 |
| Chromium (Cr), % | 14 to 15.5 | |
| 0 |
| Copper (Cu), % | 2.5 to 4.5 | |
| 0 |
| Iron (Fe), % | 71.9 to 79.9 | |
| 98.4 to 98.9 |
| Manganese (Mn), % | 0 to 1.0 | |
| 0.7 to 1.0 |
| Nickel (Ni), % | 3.5 to 5.5 | |
| 0 |
| 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 |
| Sulfur (S), % | 0 to 0.030 | |
| 0.080 to 0.13 |