Grade 20 Titanium vs. ISO-WD21150 Magnesium
Grade 20 titanium belongs to the titanium alloys classification, while ISO-WD21150 magnesium belongs to the magnesium alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.
For each property being compared, the top bar is grade 20 titanium and the bottom bar is ISO-WD21150 magnesium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 120 | |
| 45 |
| Elongation at Break, % | 5.7 to 17 | |
| 5.7 to 11 |
| Poisson's Ratio | 0.32 | |
| 0.29 |
| Shear Modulus, GPa | 47 | |
| 17 |
| Shear Strength, MPa | 560 to 740 | |
| 150 to 170 |
| Tensile Strength: Ultimate (UTS), MPa | 900 to 1270 | |
| 240 to 290 |
| Tensile Strength: Yield (Proof), MPa | 850 to 1190 | |
| 120 to 200 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 350 |
| Maximum Temperature: Mechanical, °C | 370 | |
| 110 |
| Melting Completion (Liquidus), °C | 1660 | |
| 600 |
| Melting Onset (Solidus), °C | 1600 | |
| 550 |
| Specific Heat Capacity, J/kg-K | 520 | |
| 990 |
| Thermal Expansion, µm/m-K | 9.6 | |
| 27 |
Otherwise Unclassified Properties
| Density, g/cm3 | 5.0 | |
| 1.7 |
| Embodied Carbon, kg CO2/kg material | 52 | |
| 23 |
| Embodied Energy, MJ/kg | 860 | |
| 160 |
| Embodied Water, L/kg | 350 | |
| 980 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 150 | |
| 15 to 24 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 2940 to 5760 | |
| 160 to 460 |
| Stiffness to Weight: Axial, points | 14 | |
| 15 |
| Stiffness to Weight: Bending, points | 33 | |
| 70 |
| Strength to Weight: Axial, points | 50 to 70 | |
| 40 to 48 |
| Strength to Weight: Bending, points | 41 to 52 | |
| 52 to 58 |
| Thermal Shock Resistance, points | 55 to 77 | |
| 15 to 17 |
Alloy Composition
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| Aluminum (Al), % | 3.0 to 4.0 | |
| 2.4 to 3.6 |
| Carbon (C), % | 0 to 0.050 | |
| 0 |
| Chromium (Cr), % | 5.5 to 6.5 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.050 |
| Hydrogen (H), % | 0 to 0.020 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 to 0.0050 |
| Magnesium (Mg), % | 0 | |
| 94 to 97 |
| Manganese (Mn), % | 0 | |
| 0.15 to 0.4 |
| Molybdenum (Mo), % | 3.5 to 4.5 | |
| 0 |
| Nickel (Ni), % | 0 | |
| 0 to 0.0050 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.12 | |
| 0 |
| Palladium (Pd), % | 0.040 to 0.080 | |
| 0 |
| Silicon (Si), % | 0 | |
| 0 to 0.1 |
| Titanium (Ti), % | 71 to 77 | |
| 0 |
| Vanadium (V), % | 7.5 to 8.5 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 0.5 to 1.5 |
| Zirconium (Zr), % | 3.5 to 4.5 | |
| 0 |
| Residuals, % | 0 to 0.4 | |
| 0 to 0.3 |