SAE-AISI 1017 Steel vs. S40945 Stainless Steel
Both SAE-AISI 1017 steel and S40945 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 31 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 SAE-AISI 1017 steel and the bottom bar is S40945 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 120 to 130 | |
| 160 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 20 to 30 | |
| 25 |
| Fatigue Strength, MPa | 170 to 270 | |
| 160 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 280 to 290 | |
| 270 |
| Tensile Strength: Ultimate (UTS), MPa | 420 to 460 | |
| 430 |
| Tensile Strength: Yield (Proof), MPa | 220 to 390 | |
| 230 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 710 |
| Melting Completion (Liquidus), °C | 1470 | |
| 1450 |
| Melting Onset (Solidus), °C | 1420 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 53 | |
| 26 |
| Thermal Expansion, µm/m-K | 12 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 6.9 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 7.9 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 8.0 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.2 |
| Embodied Energy, MJ/kg | 18 | |
| 31 |
| Embodied Water, L/kg | 45 | |
| 94 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 88 to 110 | |
| 89 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 400 | |
| 140 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 15 to 16 | |
| 15 |
| Strength to Weight: Bending, points | 16 to 17 | |
| 16 |
| Thermal Diffusivity, mm2/s | 14 | |
| 6.9 |
| Thermal Shock Resistance, points | 13 to 14 | |
| 15 |
Alloy Composition
| Carbon (C), % | 0.15 to 0.2 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 10.5 to 11.7 |
| Iron (Fe), % | 99.11 to 99.55 | |
| 85.1 to 89.3 |
| Manganese (Mn), % | 0.3 to 0.6 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 0 to 0.5 |
| Niobium (Nb), % | 0 | |
| 0.18 to 0.4 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.050 | |
| 0 to 0.030 |
| Titanium (Ti), % | 0 | |
| 0.050 to 0.2 |