Grade 21 Titanium vs. EN 1.4020 Stainless Steel
Grade 21 titanium belongs to the titanium alloys classification, while EN 1.4020 stainless steel belongs to the iron 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 grade 21 titanium and the bottom bar is EN 1.4020 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 140 | |
| 200 |
| Elongation at Break, % | 9.0 to 17 | |
| 13 to 34 |
| Fatigue Strength, MPa | 550 to 660 | |
| 340 to 540 |
| Poisson's Ratio | 0.32 | |
| 0.28 |
| Shear Modulus, GPa | 51 | |
| 77 |
| Shear Strength, MPa | 550 to 790 | |
| 510 to 680 |
| Tensile Strength: Ultimate (UTS), MPa | 890 to 1340 | |
| 770 to 1130 |
| Tensile Strength: Yield (Proof), MPa | 870 to 1170 | |
| 430 to 950 |
Thermal Properties
| Latent Heat of Fusion, J/g | 410 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 310 | |
| 890 |
| Melting Completion (Liquidus), °C | 1740 | |
| 1390 |
| Melting Onset (Solidus), °C | 1690 | |
| 1350 |
| Specific Heat Capacity, J/kg-K | 500 | |
| 480 |
| Thermal Expansion, µm/m-K | 7.1 | |
| 17 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 60 | |
| 11 |
| Density, g/cm3 | 5.4 | |
| 7.6 |
| Embodied Carbon, kg CO2/kg material | 32 | |
| 2.5 |
| Embodied Energy, MJ/kg | 490 | |
| 37 |
| Embodied Water, L/kg | 180 | |
| 150 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 110 to 180 | |
| 140 to 220 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2760 to 5010 | |
| 460 to 2290 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 32 | |
| 25 |
| Strength to Weight: Axial, points | 46 to 69 | |
| 28 to 41 |
| Strength to Weight: Bending, points | 38 to 50 | |
| 25 to 32 |
| Thermal Shock Resistance, points | 66 to 100 | |
| 16 to 23 |
Alloy Composition
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| Aluminum (Al), % | 2.5 to 3.5 | |
| 0 |
| Carbon (C), % | 0 to 0.050 | |
| 0 to 0.15 |
| Chromium (Cr), % | 0 | |
| 16.5 to 19 |
| Hydrogen (H), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.4 | |
| 62.8 to 71.8 |
| Manganese (Mn), % | 0 | |
| 11 to 14 |
| Molybdenum (Mo), % | 14 to 16 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 0.5 to 2.5 |
| Niobium (Nb), % | 2.2 to 3.2 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0.2 to 0.45 |
| Oxygen (O), % | 0 to 0.17 | |
| 0 |
| Phosphorus (P), % | 0 | |
| 0 to 0.045 |
| Silicon (Si), % | 0.15 to 0.25 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 | |
| 0 to 0.030 |
| Titanium (Ti), % | 76 to 81.2 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 |