Grade 5 Titanium vs. SAE-AISI 1045 Steel
Grade 5 titanium belongs to the titanium alloys classification, while SAE-AISI 1045 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.
For each property being compared, the top bar is grade 5 titanium and the bottom bar is SAE-AISI 1045 steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 190 |
| Elongation at Break, % | 8.6 to 11 | |
| 13 to 18 |
| Fatigue Strength, MPa | 530 to 630 | |
| 220 to 370 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Reduction in Area, % | 21 to 25 | |
| 40 to 51 |
| Shear Modulus, GPa | 40 | |
| 72 |
| Shear Strength, MPa | 600 to 710 | |
| 380 to 410 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 to 1190 | |
| 620 to 680 |
| Tensile Strength: Yield (Proof), MPa | 910 to 1110 | |
| 330 to 580 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 250 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 400 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1460 |
| Melting Onset (Solidus), °C | 1650 | |
| 1420 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 470 |
| Thermal Conductivity, W/m-K | 6.8 | |
| 51 |
| Thermal Expansion, µm/m-K | 8.9 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 7.0 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 8.1 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 1.8 |
| Density, g/cm3 | 4.4 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 1.4 |
| Embodied Energy, MJ/kg | 610 | |
| 18 |
| Embodied Water, L/kg | 200 | |
| 46 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 110 | |
| 84 to 93 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3980 to 5880 | |
| 300 to 900 |
| Stiffness to Weight: Axial, points | 13 | |
| 13 |
| Stiffness to Weight: Bending, points | 35 | |
| 24 |
| Strength to Weight: Axial, points | 62 to 75 | |
| 22 to 24 |
| Strength to Weight: Bending, points | 50 to 56 | |
| 21 to 22 |
| Thermal Diffusivity, mm2/s | 2.7 | |
| 14 |
| Thermal Shock Resistance, points | 76 to 91 | |
| 20 to 22 |
Alloy Composition
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| Aluminum (Al), % | 5.5 to 6.8 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0.43 to 0.5 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 98.5 to 99 |
| Manganese (Mn), % | 0 | |
| 0.6 to 0.9 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Oxygen (O), % | 0 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Sulfur (S), % | 0 | |
| 0 to 0.050 |
| Titanium (Ti), % | 87.4 to 91 | |
| 0 |
| Vanadium (V), % | 3.5 to 4.5 | |
| 0 |
| Yttrium (Y), % | 0 to 0.0050 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |