Grade 705C Zirconium vs. ISO-WD32260 Magnesium
Grade 705C zirconium belongs to the otherwise unclassified metals classification, while ISO-WD32260 magnesium belongs to the magnesium alloys. There are 20 material properties with values for both materials. Properties with values for just one material (12, 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 705C zirconium and the bottom bar is ISO-WD32260 magnesium.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 98 | |
| 46 |
| Elongation at Break, % | 13 | |
| 4.5 to 6.0 |
| Poisson's Ratio | 0.34 | |
| 0.29 |
| Shear Modulus, GPa | 36 | |
| 18 |
| Tensile Strength: Ultimate (UTS), MPa | 540 | |
| 330 to 340 |
| Tensile Strength: Yield (Proof), MPa | 390 | |
| 230 to 250 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 330 |
| Specific Heat Capacity, J/kg-K | 270 | |
| 970 |
| Thermal Conductivity, W/m-K | 18 | |
| 110 |
| Thermal Expansion, µm/m-K | 5.7 | |
| 27 |
Otherwise Unclassified Properties
| Density, g/cm3 | 6.7 | |
| 1.9 |
| Embodied Water, L/kg | 450 | |
| 940 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 66 | |
| 14 to 19 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 790 | |
| 560 to 700 |
| Stiffness to Weight: Axial, points | 8.1 | |
| 13 |
| Stiffness to Weight: Bending, points | 23 | |
| 63 |
| Strength to Weight: Axial, points | 22 | |
| 48 to 51 |
| Strength to Weight: Bending, points | 22 | |
| 56 to 58 |
| Thermal Diffusivity, mm2/s | 9.9 | |
| 63 |
| Thermal Shock Resistance, points | 69 | |
| 19 to 20 |
Alloy Composition
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| Carbon (C), % | 0 to 0.1 | |
| 0 |
| Hafnium (Hf), % | 0 to 4.5 | |
| 0 |
| Hydrogen (H), % | 0 to 0.0050 | |
| 0 |
| Iron (Fe), % | 0 to 0.3 | |
| 0 |
| Magnesium (Mg), % | 0 | |
| 92.7 to 94.8 |
| Niobium (Nb), % | 2.0 to 3.0 | |
| 0 |
| Nitrogen (N), % | 0 to 0.030 | |
| 0 |
| Oxygen (O), % | 0 to 0.3 | |
| 0 |
| Phosphorus (P), % | 0 to 0.010 | |
| 0 |
| Zinc (Zn), % | 0 | |
| 4.8 to 6.2 |
| Zirconium (Zr), % | 91.9 to 98 | |
| 0.45 to 0.8 |
| Residuals, % | 0 | |
| 0 to 0.3 |