SAE-AISI 1108 Steel vs. S45000 Stainless Steel
Both SAE-AISI 1108 steel and S45000 stainless 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 (3, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1108 steel and the bottom bar is S45000 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 110 to 140 | |
| 280 to 410 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 200 |
| Elongation at Break, % | 23 to 34 | |
| 6.8 to 14 |
| Fatigue Strength, MPa | 170 to 260 | |
| 330 to 650 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Reduction in Area, % | 45 to 57 | |
| 22 to 50 |
| Shear Modulus, GPa | 73 | |
| 76 |
| Shear Strength, MPa | 250 to 280 | |
| 590 to 830 |
| Tensile Strength: Ultimate (UTS), MPa | 380 to 440 | |
| 980 to 1410 |
| Tensile Strength: Yield (Proof), MPa | 220 to 360 | |
| 580 to 1310 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 840 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1440 |
| Melting Onset (Solidus), °C | 1420 | |
| 1390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 480 |
| Thermal Conductivity, W/m-K | 52 | |
| 17 |
| Thermal Expansion, µm/m-K | 12 | |
| 11 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.0 | |
| 2.2 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.0 | |
| 2.5 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 1.8 | |
| 13 |
| Density, g/cm3 | 7.9 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 2.8 |
| Embodied Energy, MJ/kg | 18 | |
| 39 |
| Embodied Water, L/kg | 46 | |
| 130 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 95 to 110 | |
| 94 to 160 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 130 to 340 | |
| 850 to 4400 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 25 |
| Strength to Weight: Axial, points | 13 to 16 | |
| 35 to 50 |
| Strength to Weight: Bending, points | 15 to 16 | |
| 28 to 36 |
| Thermal Diffusivity, mm2/s | 14 | |
| 4.5 |
| Thermal Shock Resistance, points | 12 to 14 | |
| 33 to 47 |
Alloy Composition
| Carbon (C), % | 0.080 to 0.13 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 | |
| 14 to 16 |
| Copper (Cu), % | 0 | |
| 1.3 to 1.8 |
| Iron (Fe), % | 98.9 to 99.24 | |
| 72.1 to 79.3 |
| Manganese (Mn), % | 0.6 to 0.8 | |
| 0 to 1.0 |
| Molybdenum (Mo), % | 0 | |
| 0.5 to 1.0 |
| Nickel (Ni), % | 0 | |
| 5.0 to 7.0 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0.080 to 0.13 | |
| 0 to 0.030 |