Titanium 15-3-3-3 vs. AISI 431 Stainless Steel
Titanium 15-3-3-3 belongs to the titanium alloys classification, while AISI 431 stainless steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is titanium 15-3-3-3 and the bottom bar is AISI 431 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 100 | |
| 200 |
| Elongation at Break, % | 5.7 to 8.0 | |
| 15 to 17 |
| Fatigue Strength, MPa | 610 to 710 | |
| 430 to 610 |
| Poisson's Ratio | 0.33 | |
| 0.28 |
| Shear Modulus, GPa | 39 | |
| 77 |
| Shear Strength, MPa | 660 to 810 | |
| 550 to 840 |
| Tensile Strength: Ultimate (UTS), MPa | 1120 to 1390 | |
| 890 to 1380 |
| Tensile Strength: Yield (Proof), MPa | 1100 to 1340 | |
| 710 to 1040 |
Thermal Properties
| Latent Heat of Fusion, J/g | 390 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 430 | |
| 850 |
| Melting Completion (Liquidus), °C | 1620 | |
| 1510 |
| Melting Onset (Solidus), °C | 1560 | |
| 1450 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 480 |
| Thermal Conductivity, W/m-K | 8.1 | |
| 26 |
| Thermal Expansion, µm/m-K | 9.8 | |
| 12 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.2 | |
| 2.6 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.3 | |
| 3.0 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 40 | |
| 9.0 |
| Density, g/cm3 | 4.8 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 59 | |
| 2.2 |
| Embodied Energy, MJ/kg | 950 | |
| 31 |
| Embodied Water, L/kg | 260 | |
| 120 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 78 to 89 | |
| 140 to 180 |
| Stiffness to Weight: Axial, points | 12 | |
| 14 |
| Stiffness to Weight: Bending, points | 32 | |
| 25 |
| Strength to Weight: Axial, points | 64 to 80 | |
| 32 to 50 |
| Strength to Weight: Bending, points | 50 to 57 | |
| 27 to 36 |
| Thermal Diffusivity, mm2/s | 3.2 | |
| 7.0 |
| Thermal Shock Resistance, points | 79 to 98 | |
| 28 to 43 |
Alloy Composition
| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.2 |
| Chromium (Cr), % | 2.5 to 3.5 | |
| 15 to 17 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.25 | |
| 78.2 to 83.8 |
| Manganese (Mn), % | 0 | |
| 0 to 1.0 |
| Nickel (Ni), % | 0 | |
| 1.3 to 2.5 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0 |
| Oxygen (O), % | 0 to 0.13 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Tin (Sn), % | 2.5 to 3.5 | |
| 0 |
| Titanium (Ti), % | 72.6 to 78.5 | |
| 0 |
| Vanadium (V), % | 14 to 16 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |