AISI 309S Stainless Steel vs. SAE-AISI 1050 Steel
Both AISI 309S stainless steel and SAE-AISI 1050 steel are iron alloys. They have 63% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.
For each property being compared, the top bar is AISI 309S stainless steel and the bottom bar is SAE-AISI 1050 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 190 | |
| 200 to 220 |
| Elastic (Young's, Tensile) Modulus, GPa | 200 | |
| 190 |
| Elongation at Break, % | 42 | |
| 11 to 17 |
| Fatigue Strength, MPa | 210 | |
| 260 to 400 |
| Poisson's Ratio | 0.27 | |
| 0.29 |
| Reduction in Area, % | 51 | |
| 34 to 45 |
| Shear Modulus, GPa | 78 | |
| 72 |
| Shear Strength, MPa | 400 | |
| 430 to 470 |
| Tensile Strength: Ultimate (UTS), MPa | 580 | |
| 690 to 790 |
| Tensile Strength: Yield (Proof), MPa | 230 | |
| 390 to 650 |
Thermal Properties
| Latent Heat of Fusion, J/g | 290 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 1080 | |
| 400 |
| Melting Completion (Liquidus), °C | 1420 | |
| 1460 |
| Melting Onset (Solidus), °C | 1370 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 480 | |
| 470 |
| Thermal Conductivity, W/m-K | 15 | |
| 51 |
| Thermal Expansion, µm/m-K | 16 | |
| 12 |
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 | 19 | |
| 1.8 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 3.6 | |
| 1.4 |
| Embodied Energy, MJ/kg | 51 | |
| 18 |
| Embodied Water, L/kg | 170 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 190 | |
| 81 to 100 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 140 | |
| 400 to 1130 |
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 24 |
| Strength to Weight: Axial, points | 21 | |
| 25 to 28 |
| Strength to Weight: Bending, points | 20 | |
| 22 to 24 |
| Thermal Diffusivity, mm2/s | 4.0 | |
| 14 |
| Thermal Shock Resistance, points | 13 | |
| 22 to 25 |
Alloy Composition
| Carbon (C), % | 0 to 0.080 | |
| 0.48 to 0.55 |
| Chromium (Cr), % | 22 to 24 | |
| 0 |
| Iron (Fe), % | 58.1 to 66 | |
| 98.5 to 98.9 |
| Manganese (Mn), % | 0 to 2.0 | |
| 0.6 to 0.9 |
| Nickel (Ni), % | 12 to 15 | |
| 0 |
| Phosphorus (P), % | 0 to 0.045 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.75 | |
| 0 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 to 0.050 |