SAE-AISI 50B60 Steel vs. 1200 Aluminum
SAE-AISI 50B60 steel belongs to the iron alloys classification, while 1200 aluminum belongs to the aluminum alloys. 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 50B60 steel and the bottom bar is 1200 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 180 to 190 | |
| 23 to 48 |
| Elastic (Young's, Tensile) Modulus, GPa | 190 | |
| 69 |
| Elongation at Break, % | 12 to 20 | |
| 1.1 to 28 |
| Fatigue Strength, MPa | 240 to 330 | |
| 25 to 69 |
| Poisson's Ratio | 0.29 | |
| 0.33 |
| Shear Modulus, GPa | 72 | |
| 26 |
| Shear Strength, MPa | 380 | |
| 54 to 100 |
| Tensile Strength: Ultimate (UTS), MPa | 610 to 630 | |
| 85 to 180 |
| Tensile Strength: Yield (Proof), MPa | 350 to 530 | |
| 28 to 160 |
Thermal Properties
| Latent Heat of Fusion, J/g | 250 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 410 | |
| 170 |
| Melting Completion (Liquidus), °C | 1450 | |
| 660 |
| Melting Onset (Solidus), °C | 1410 | |
| 650 |
| Specific Heat Capacity, J/kg-K | 470 | |
| 900 |
| Thermal Conductivity, W/m-K | 45 | |
| 230 |
| Thermal Expansion, µm/m-K | 12 | |
| 23 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 7.2 | |
| 58 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 8.3 | |
| 190 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 2.0 | |
| 9.0 |
| Density, g/cm3 | 7.8 | |
| 2.7 |
| Embodied Carbon, kg CO2/kg material | 1.4 | |
| 8.2 |
| Embodied Energy, MJ/kg | 19 | |
| 150 |
| Embodied Water, L/kg | 48 | |
| 1190 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 71 to 100 | |
| 2.0 to 19 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 330 to 750 | |
| 5.7 to 180 |
| Stiffness to Weight: Axial, points | 13 | |
| 14 |
| Stiffness to Weight: Bending, points | 24 | |
| 50 |
| Strength to Weight: Axial, points | 22 to 23 | |
| 8.7 to 19 |
| Strength to Weight: Bending, points | 20 to 21 | |
| 16 to 26 |
| Thermal Diffusivity, mm2/s | 12 | |
| 92 |
| Thermal Shock Resistance, points | 20 | |
| 3.8 to 8.1 |
Alloy Composition
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| Aluminum (Al), % | 0 | |
| 99 to 100 |
| Boron (B), % | 0.00050 to 0.0030 | |
| 0 |
| Carbon (C), % | 0.56 to 0.64 | |
| 0 |
| Chromium (Cr), % | 0.4 to 0.6 | |
| 0 |
| Copper (Cu), % | 0 | |
| 0 to 0.050 |
| Iron (Fe), % | 97.3 to 98.1 | |
| 0 to 1.0 |
| Manganese (Mn), % | 0.75 to 1.0 | |
| 0 to 0.050 |
| Phosphorus (P), % | 0 to 0.035 | |
| 0 |
| Silicon (Si), % | 0.15 to 0.35 | |
| 0 to 1.0 |
| Sulfur (S), % | 0 to 0.040 | |
| 0 |
| Titanium (Ti), % | 0 | |
| 0 to 0.050 |
| Zinc (Zn), % | 0 | |
| 0 to 0.1 |
| Residuals, % | 0 | |
| 0 to 0.15 |