SAE-AISI 1137 Steel vs. Grade 20 Titanium
SAE-AISI 1137 steel belongs to the iron alloys classification, while grade 20 titanium belongs to the titanium alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.
For each property being compared, the top bar is SAE-AISI 1137 steel and the bottom bar is grade 20 titanium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 120 |
| Elongation at Break, % | 11 to 17 | |
| 5.7 to 17 |
| Fatigue Strength, MPa | 250 to 400 | |
| 550 to 630 |
| Poisson's Ratio | 0.29 | |
| 0.32 |
| Reduction in Area, % | 34 to 39 | |
| 23 |
| Shear Modulus, GPa | 73 | |
| 47 |
| Shear Strength, MPa | 430 to 460 | |
| 560 to 740 |
| Tensile Strength: Ultimate (UTS), MPa | 700 to 760 | |
| 900 to 1270 |
| Tensile Strength: Yield (Proof), MPa | 370 to 650 | |
| 850 to 1190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 400 | |
| 370 |
| Melting Completion (Liquidus), °C | 1460 | |
| 1660 |
| Melting Onset (Solidus), °C | 1420 | |
| 1600 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 520 |
| Thermal Expansion, µm/m-K | 13 | |
| 9.6 |
Otherwise Unclassified Properties
| Density, g/cm3 | 7.8 | |
| 5.0 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 52 |
| Embodied Energy, MJ/kg | 19 | |
| 860 |
| Embodied Water, L/kg | 48 | |
| 350 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 81 to 100 | |
| 71 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 360 to 1130 | |
| 2940 to 5760 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 33 |
| Strength to Weight: Axial, points | 25 to 27 | |
| 50 to 70 |
| Strength to Weight: Bending, points | 22 to 24 | |
| 41 to 52 |
| Thermal Shock Resistance, points | 21 to 23 | |
| 55 to 77 |
Alloy Composition
| Aluminum (Al), % | 0 | |
| 3.0 to 4.0 |
| Carbon (C), % | 0.32 to 0.39 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 | |
| 5.5 to 6.5 |
| Hydrogen (H), % | 0 | |
| 0 to 0.020 |
| Iron (Fe), % | 97.8 to 98.3 | |
| 0 to 0.3 |
| Manganese (Mn), % | 1.4 to 1.7 | |
| 0 |
| Molybdenum (Mo), % | 0 | |
| 3.5 to 4.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.030 |
| Oxygen (O), % | 0 | |
| 0 to 0.12 |
| Palladium (Pd), % | 0 | |
| 0.040 to 0.080 |
| Phosphorus (P), % | 0 to 0.040 | |
| 0 |
| Sulfur (S), % | 0.080 to 0.13 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 71 to 77 |
| Vanadium (V), % | 0 | |
| 7.5 to 8.5 |
| Zirconium (Zr), % | 0 | |
| 3.5 to 4.5 |
| Residuals, % | 0 | |
| 0 to 0.4 |