SAE-AISI 8620 Steel vs. ZE63A Magnesium
SAE-AISI 8620 steel belongs to the iron alloys classification, while ZE63A magnesium belongs to the magnesium alloys. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 SAE-AISI 8620 steel and the bottom bar is ZE63A magnesium.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 150 to 210 | |
| 73 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 46 |
| Elongation at Break, % | 13 to 31 | |
| 7.7 |
| Fatigue Strength, MPa | 270 to 360 | |
| 120 |
| Poisson's Ratio | 0.29 | |
| 0.29 |
| Shear Modulus, GPa | 73 | |
| 17 |
| Shear Strength, MPa | 340 to 420 | |
| 170 |
| Tensile Strength: Ultimate (UTS), MPa | 520 to 690 | |
| 300 |
| Tensile Strength: Yield (Proof), MPa | 360 to 570 | |
| 190 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 330 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 170 |
| Melting Completion (Liquidus), °C | 1460 | |
| 510 |
| Melting Onset (Solidus), °C | 1420 | |
| 390 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 950 |
| Thermal Conductivity, W/m-K | 39 | |
| 110 |
| Thermal Expansion, µm/m-K | 13 | |
| 27 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.3 | |
| 31 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 140 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.6 | |
| 22 |
| Density, g/cm3 | 7.8 | |
| 2.0 |
| Embodied Carbon, kg CO2/kg material | 1.5 | |
| 24 |
| Embodied Energy, MJ/kg | 20 | |
| 180 |
| Embodied Water, L/kg | 50 | |
| 920 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 86 to 150 | |
| 20 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 340 to 880 | |
| 400 |
| Stiffness to Weight: Axial, points | 13 | |
| 12 |
| Stiffness to Weight: Bending, points | 24 | |
| 58 |
| Strength to Weight: Axial, points | 18 to 24 | |
| 40 |
| Strength to Weight: Bending, points | 18 to 22 | |
| 48 |
| Thermal Diffusivity, mm2/s | 10 | |
| 57 |
| Thermal Shock Resistance, points | 15 to 20 | |
| 17 |
Alloy Composition
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| Carbon (C), % | 0.18 to 0.23 | |
| 0 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.1 |
| Iron (Fe), % | 96.9 to 98 | |
| 0 |
| Magnesium (Mg), % | 0 | |
| 89.6 to 92 |
| Manganese (Mn), % | 0.7 to 0.9 | |
| 0 |
| Molybdenum (Mo), % | 0.15 to 0.25 | |
| 0 |
| Nickel (Ni), % | 0.4 to 0.7 | |
| 0 to 0.010 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 |
| Unspecified Rare Earths, % | 0 | |
| 2.1 to 3.0 |
| Zinc (Zn), % | 0 | |
| 5.5 to 6.0 |
| Zirconium (Zr), % | 0 | |
| 0.4 to 1.0 |
| Residuals, % | 0 | |
| 0 to 0.3 |