Grade 5 Titanium vs. S21904 Stainless Steel
Grade 5 titanium belongs to the titanium alloys classification, while S21904 stainless steel belongs to the iron alloys. There are 30 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 grade 5 titanium and the bottom bar is S21904 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 110 | |
| 200 |
| Elongation at Break, % | 8.6 to 11 | |
| 17 to 51 |
| Fatigue Strength, MPa | 530 to 630 | |
| 380 to 550 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Shear Modulus, GPa | 40 | |
| 78 |
| Shear Strength, MPa | 600 to 710 | |
| 510 to 620 |
| Tensile Strength: Ultimate (UTS), MPa | 1000 to 1190 | |
| 700 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 910 to 1110 | |
| 390 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 290 |
| Maximum Temperature: Mechanical, °C | 330 | |
| 980 |
| Melting Completion (Liquidus), °C | 1610 | |
| 1400 |
| Melting Onset (Solidus), °C | 1650 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 560 | |
| 480 |
| Thermal Conductivity, W/m-K | 6.8 | |
| 14 |
| Thermal Expansion, µm/m-K | 8.9 | |
| 17 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 1.0 | |
| 2.5 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 2.0 | |
| 2.9 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 36 | |
| 15 |
| Density, g/cm3 | 4.4 | |
| 7.7 |
| Embodied Carbon, kg CO2/kg material | 38 | |
| 3.0 |
| Embodied Energy, MJ/kg | 610 | |
| 43 |
| Embodied Water, L/kg | 200 | |
| 160 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 100 to 110 | |
| 160 to 310 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 3980 to 5880 | |
| 380 to 2070 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 35 | |
| 25 |
| Strength to Weight: Axial, points | 62 to 75 | |
| 25 to 36 |
| Strength to Weight: Bending, points | 50 to 56 | |
| 23 to 29 |
| Thermal Diffusivity, mm2/s | 2.7 | |
| 3.8 |
| Thermal Shock Resistance, points | 76 to 91 | |
| 15 to 21 |
Alloy Composition
| Aluminum (Al), % | 5.5 to 6.8 | |
| 0 |
| Carbon (C), % | 0 to 0.080 | |
| 0 to 0.040 |
| Chromium (Cr), % | 0 | |
| 19 to 21.5 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 59.5 to 67.4 |
| Manganese (Mn), % | 0 | |
| 8.0 to 10 |
| Nickel (Ni), % | 0 | |
| 5.5 to 7.5 |
| Nitrogen (N), % | 0 to 0.050 | |
| 0.15 to 0.4 |
| Oxygen (O), % | 0 to 0.2 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| 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 |