AZ91A Magnesium vs. C99600 Bronze
AZ91A magnesium belongs to the magnesium alloys classification, while C99600 bronze belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (9, 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 AZ91A magnesium and the bottom bar is C99600 bronze.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 46 | |
| 150 |
| Elongation at Break, % | 5.0 | |
| 27 to 34 |
| Poisson's Ratio | 0.29 | |
| 0.34 |
| Shear Modulus, GPa | 18 | |
| 56 |
| Tensile Strength: Ultimate (UTS), MPa | 240 | |
| 560 |
| Tensile Strength: Yield (Proof), MPa | 160 | |
| 250 to 300 |
Thermal Properties
| Latent Heat of Fusion, J/g | 360 | |
| 240 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 200 |
| Melting Completion (Liquidus), °C | 600 | |
| 1100 |
| Melting Onset (Solidus), °C | 470 | |
| 1050 |
| Specific Heat Capacity, J/kg-K | 990 | |
| 440 |
| Thermal Expansion, µm/m-K | 26 | |
| 19 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 22 |
| Density, g/cm3 | 1.7 | |
| 8.1 |
| Embodied Carbon, kg CO2/kg material | 22 | |
| 3.2 |
| Embodied Energy, MJ/kg | 160 | |
| 51 |
| Embodied Water, L/kg | 990 | |
| 300 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 11 | |
| 130 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 280 | |
| 210 to 310 |
| Stiffness to Weight: Axial, points | 15 | |
| 10 |
| Stiffness to Weight: Bending, points | 69 | |
| 22 |
| Strength to Weight: Axial, points | 38 | |
| 19 |
| Strength to Weight: Bending, points | 49 | |
| 19 |
| Thermal Shock Resistance, points | 14 | |
| 14 |
Alloy Composition
| Aluminum (Al), % | 8.3 to 9.7 | |
| 1.0 to 2.8 |
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Cobalt (Co), % | 0 | |
| 0 to 0.2 |
| Copper (Cu), % | 0 to 0.1 | |
| 50.8 to 60 |
| Iron (Fe), % | 0 | |
| 0 to 0.2 |
| Lead (Pb), % | 0 | |
| 0 to 0.020 |
| Magnesium (Mg), % | 88.2 to 91.2 | |
| 0 |
| Manganese (Mn), % | 0.13 to 0.5 | |
| 39 to 45 |
| Nickel (Ni), % | 0 to 0.030 | |
| 0 to 0.2 |
| Silicon (Si), % | 0 to 0.5 | |
| 0 to 0.1 |
| Tin (Sn), % | 0 | |
| 0 to 0.1 |
| Zinc (Zn), % | 0.35 to 1.0 | |
| 0 to 0.2 |
| Residuals, % | 0 | |
| 0 to 0.3 |