AZ91E Magnesium vs. EN 1.4313 Stainless Steel
AZ91E magnesium belongs to the magnesium alloys classification, while EN 1.4313 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (6, 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 AZ91E magnesium and the bottom bar is EN 1.4313 stainless steel.
Metric UnitsUS Customary Units
Mechanical Properties
| Elastic (Young's, Tensile) Modulus, GPa | 46 | |
| 200 |
| Elongation at Break, % | 2.5 to 6.2 | |
| 12 to 17 |
| Fatigue Strength, MPa | 81 to 85 | |
| 340 to 510 |
| Impact Strength: V-Notched Charpy, J | 0.79 to 2.8 | |
| 55 to 70 |
| Poisson's Ratio | 0.29 | |
| 0.28 |
| Shear Modulus, GPa | 18 | |
| 76 |
| Shear Strength, MPa | 89 to 150 | |
| 460 to 600 |
| Tensile Strength: Ultimate (UTS), MPa | 160 to 260 | |
| 750 to 1000 |
| Tensile Strength: Yield (Proof), MPa | 96 to 130 | |
| 580 to 910 |
Thermal Properties
| Latent Heat of Fusion, J/g | 350 | |
| 280 |
| Maximum Temperature: Mechanical, °C | 130 | |
| 780 |
| Melting Completion (Liquidus), °C | 600 | |
| 1450 |
| Melting Onset (Solidus), °C | 500 | |
| 1400 |
| Specific Heat Capacity, J/kg-K | 990 | |
| 480 |
| Thermal Conductivity, W/m-K | 84 | |
| 25 |
| Thermal Expansion, µm/m-K | 27 | |
| 10 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 10 to 12 | |
| 2.9 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 52 to 60 | |
| 3.3 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 12 | |
| 10 |
| Density, g/cm3 | 1.7 | |
| 7.8 |
| Embodied Carbon, kg CO2/kg material | 22 | |
| 2.4 |
| Embodied Energy, MJ/kg | 160 | |
| 34 |
| Embodied Water, L/kg | 990 | |
| 110 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 3.4 to 12 | |
| 110 to 150 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 100 to 190 | |
| 870 to 2100 |
| Stiffness to Weight: Axial, points | 15 | |
| 14 |
| Stiffness to Weight: Bending, points | 69 | |
| 25 |
| Strength to Weight: Axial, points | 25 to 42 | |
| 27 to 36 |
| Strength to Weight: Bending, points | 37 to 53 | |
| 23 to 28 |
| Thermal Diffusivity, mm2/s | 49 | |
| 6.7 |
| Thermal Shock Resistance, points | 9.0 to 15 | |
| 27 to 36 |
Alloy Composition
| Aluminum (Al), % | 8.1 to 9.3 | |
| 0 |
| Carbon (C), % | 0 | |
| 0 to 0.050 |
| Chromium (Cr), % | 0 | |
| 12 to 14 |
| Copper (Cu), % | 0 to 0.015 | |
| 0 |
| Iron (Fe), % | 0 to 0.0050 | |
| 78.5 to 84.2 |
| Magnesium (Mg), % | 88.8 to 91.3 | |
| 0 |
| Manganese (Mn), % | 0.17 to 0.35 | |
| 0 to 1.5 |
| Molybdenum (Mo), % | 0 | |
| 0.3 to 0.7 |
| Nickel (Ni), % | 0 to 0.0010 | |
| 3.5 to 4.5 |
| Nitrogen (N), % | 0 | |
| 0 to 0.020 |
| Phosphorus (P), % | 0 | |
| 0 to 0.040 |
| Silicon (Si), % | 0 to 0.2 | |
| 0 to 0.7 |
| Sulfur (S), % | 0 | |
| 0 to 0.015 |
| Zinc (Zn), % | 0.4 to 1.0 | |
| 0 |
| Residuals, % | 0 to 0.3 | |
| 0 |