SAE-AISI S7 Steel vs. Titanium 4-4-2
SAE-AISI S7 steel belongs to the iron alloys classification, while titanium 4-4-2 belongs to the titanium alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI S7 steel and the bottom bar is titanium 4-4-2.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 110 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Shear Modulus, GPa | 74 | |
| 42 |
| Tensile Strength: Ultimate (UTS), MPa | 670 to 2030 | |
| 1150 to 1250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 260 | |
| 410 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1610 |
| Melting Onset (Solidus), °C | 1420 | |
| 1560 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 540 |
| Thermal Conductivity, W/m-K | 40 | |
| 6.7 |
| Thermal Expansion, µm/m-K | 12 | |
| 8.6 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 5.0 | |
| 39 |
| Density, g/cm3 | 7.8 | |
| 4.7 |
| Embodied Carbon, kg CO2/kg material | 2.3 | |
| 30 |
| Embodied Energy, MJ/kg | 31 | |
| 480 |
| Embodied Water, L/kg | 65 | |
| 180 |
Common Calculations
| Stiffness to Weight: Axial, points | 14 | |
| 13 |
| Stiffness to Weight: Bending, points | 25 | |
| 34 |
| Strength to Weight: Axial, points | 24 to 72 | |
| 68 to 74 |
| Strength to Weight: Bending, points | 22 to 46 | |
| 52 to 55 |
| Thermal Diffusivity, mm2/s | 11 | |
| 2.6 |
| Thermal Shock Resistance, points | 22 to 66 | |
| 86 to 93 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 5.0 |
| Carbon (C), % | 0.45 to 0.55 | |
| 0 to 0.080 |
| Chromium (Cr), % | 3.0 to 3.5 | |
| 0 |
| Copper (Cu), % | 0 to 0.25 | |
| 0 |
| Hydrogen (H), % | 0 | |
| 0 to 0.015 |
| Iron (Fe), % | 91.6 to 94.9 | |
| 0 to 0.2 |
| Manganese (Mn), % | 0.2 to 0.9 | |
| 0 |
| Molybdenum (Mo), % | 1.3 to 1.8 | |
| 3.0 to 5.0 |
| Nitrogen (N), % | 0 | |
| 0 to 0.050 |
| Oxygen (O), % | 0 | |
| 0 to 0.25 |
| Phosphorus (P), % | 0 to 0.030 | |
| 0 |
| Silicon (Si), % | 0.2 to 1.0 | |
| 0.3 to 0.7 |
| Sulfur (S), % | 0 to 0.030 | |
| 0 |
| Tin (Sn), % | 0 | |
| 1.5 to 2.5 |
| Titanium (Ti), % | 0 | |
| 85.8 to 92.2 |
| Vanadium (V), % | 0 to 0.3 | |
| 0 |
| Residuals, % | 0 | |
| 0 to 0.4 |