Titanium 4-4-2 vs. SAE-AISI 4620 Steel
Titanium 4-4-2 belongs to the titanium alloys classification, while SAE-AISI 4620 steel belongs to the iron alloys. There are 28 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 titanium 4-4-2 and the bottom bar is SAE-AISI 4620 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 10 | |
| 16 to 27 |
| Fatigue Strength, MPa | 590 to 620 | |
| 260 to 360 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 42 | |
| 73 |
| Shear Strength, MPa | 690 to 750 | |
| 320 to 420 |
| Tensile Strength: Ultimate (UTS), MPa | 1150 to 1250 | |
| 490 to 680 |
| Tensile Strength: Yield (Proof), MPa | 1030 to 1080 | |
| 350 to 550 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 310 | |
| 410 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1460 |
| Melting Onset (Solidus), °C | 1560 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 540 | |
| 470 |
| Thermal Conductivity, W/m-K | 6.7 | |
| 47 |
| Thermal Expansion, µm/m-K | 8.6 | |
| 13 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 39 | |
| 3.2 |
| Density, g/cm3 | 4.7 | |
| 7.9 |
| Embodied Carbon, kg CO2/kg material | 30 | |
| 1.6 |
| Embodied Energy, MJ/kg | 480 | |
| 22 |
| Embodied Water, L/kg | 180 | |
| 50 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 120 | |
| 100 to 120 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 4700 to 5160 | |
| 330 to 800 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 34 | |
| 24 |
| Strength to Weight: Axial, points | 68 to 74 | |
| 17 to 24 |
| Strength to Weight: Bending, points | 52 to 55 | |
| 18 to 22 |
| Thermal Diffusivity, mm2/s | 2.6 | |
| 13 |
| Thermal Shock Resistance, points | 86 to 93 | |
| 15 to 20 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 5.0 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0.17 to 0.22 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.2 | |
| 96.4 to 97.4 |
| Manganese (Mn), % | 0 | |
| 0.45 to 0.65 |
| Molybdenum (Mo), % | 3.0 to 5.0 | |
| 0.2 to 0.3 |
| Nickel (Ni), % | 0 | |
| 1.7 to 2.0 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Oxygen (O), % | 0 to 0.25 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.035 |
| Silicon (Si), % | 0.3 to 0.7 | |
| 0.15 to 0.35 |
| Sulfur (S), % | 0 | |
| 0 to 0.040 |
| Tin (Sn), % | 1.5 to 2.5 | |
| 0 |
| Titanium (Ti), % | 85.8 to 92.2 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |