SAE-AISI 1030 Steel vs. S40945 Stainless Steel
Both SAE-AISI 1030 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 1030 steel and the bottom bar is S40945 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 160 | |
| 160 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 190 |
| Elongation at Break, % | 14 to 22 | |
| 25 |
| Fatigue Strength, MPa | 210 to 320 | |
| 160 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 73 | |
| 75 |
| Shear Strength, MPa | 330 to 360 | |
| 270 |
| Tensile Strength: Ultimate (UTS), MPa | 530 to 590 | |
| 430 |
| Tensile Strength: Yield (Proof), MPa | 300 to 490 | |
| 230 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 270 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 710 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1450 |
| Melting Onset (Solidus), °C | 1420 | |
| 1410 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 51 | |
| 26 |
| Thermal Expansion, µm/m-K | 12 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 8.0 |
| Density, g/cm3 | 7.8 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.2 |
| Embodied Energy, MJ/kg | 18 | |
| 31 |
| Embodied Water, L/kg | 46 | |
| 94 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 77 to 100 | |
| 89 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 230 to 650 | |
| 140 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 19 to 21 | |
| 15 |
| Strength to Weight: Bending, points | 18 to 20 | |
| 16 |
| Thermal Diffusivity, mm2/s | 14 | |
| 6.9 |
| Thermal Shock Resistance, points | 17 to 19 | |
| 15 |
Alloy Composition
| Carbon (C), % | 0.28 to 0.34 | |
| 0 to 0.030 |
| Chromium (Cr), % | 0 | |
| 10.5 to 11.7 |
| Iron (Fe), % | 98.7 to 99.12 | |
| 85.1 to 89.3 |
| Manganese (Mn), % | 0.6 to 0.9 | |
| 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 |