AZ80A Magnesium vs. SAE-AISI 4028 Steel
AZ80A magnesium belongs to the magnesium alloys classification, while SAE-AISI 4028 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (1, 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 AZ80A magnesium and the bottom bar is SAE-AISI 4028 steel.
Metric UnitsUS Customary Units
Mechanical Properties
Elastic (Young's, Tensile) Modulus, GPa | 46 | |
190 |
Elongation at Break, % | 3.9 to 8.5 | |
14 to 23 |
Fatigue Strength, MPa | 140 to 170 | |
180 to 330 |
Poisson's Ratio | 0.29 | |
0.29 |
Shear Modulus, GPa | 18 | |
73 |
Shear Strength, MPa | 160 to 190 | |
310 to 380 |
Tensile Strength: Ultimate (UTS), MPa | 320 to 340 | |
490 to 630 |
Tensile Strength: Yield (Proof), MPa | 210 to 230 | |
260 to 520 |
Thermal Properties
Latent Heat of Fusion, J/g | 350 | |
250 |
Maximum Temperature: Mechanical, °C | 130 | |
400 |
Melting Completion (Liquidus), °C | 600 | |
1460 |
Melting Onset (Solidus), °C | 490 | |
1420 |
Specific Heat Capacity, J/kg-K | 990 | |
470 |
Thermal Conductivity, W/m-K | 77 | |
49 |
Thermal Expansion, µm/m-K | 26 | |
12 |
Electrical Properties
Electrical Conductivity: Equal Volume, % IACS | 11 | |
7.1 |
Electrical Conductivity: Equal Weight (Specific), % IACS | 59 | |
8.1 |
Otherwise Unclassified Properties
Base Metal Price, % relative | 12 | |
2.1 |
Density, g/cm3 | 1.7 | |
7.8 |
Embodied Carbon, kg CO2/kg material | 23 | |
1.5 |
Embodied Energy, MJ/kg | 160 | |
19 |
Embodied Water, L/kg | 990 | |
47 |
Common Calculations
Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 12 to 24 | |
81 to 95 |
Resilience: Unit (Modulus of Resilience), kJ/m3 | 500 to 600 | |
180 to 720 |
Stiffness to Weight: Axial, points | 15 | |
13 |
Stiffness to Weight: Bending, points | 69 | |
24 |
Strength to Weight: Axial, points | 51 to 55 | |
17 to 22 |
Strength to Weight: Bending, points | 60 to 63 | |
18 to 21 |
Thermal Diffusivity, mm2/s | 45 | |
13 |
Thermal Shock Resistance, points | 19 to 20 | |
16 to 20 |
Alloy Composition
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Aluminum (Al), % | 7.8 to 9.2 | |
0 |
Carbon (C), % | 0 | |
0.25 to 0.3 |
Copper (Cu), % | 0 to 0.050 | |
0 |
Iron (Fe), % | 0 to 0.0050 | |
98.1 to 98.7 |
Magnesium (Mg), % | 89 to 91.9 | |
0 |
Manganese (Mn), % | 0.12 to 0.5 | |
0.7 to 0.9 |
Molybdenum (Mo), % | 0 | |
0.2 to 0.3 |
Nickel (Ni), % | 0 to 0.0050 | |
0 |
Phosphorus (P), % | 0 | |
0 to 0.035 |
Silicon (Si), % | 0 to 0.1 | |
0.15 to 0.35 |
Sulfur (S), % | 0 | |
0.035 to 0.050 |
Zinc (Zn), % | 0.2 to 0.8 | |
0 |
Residuals, % | 0 to 0.3 | |
0 |