5251-H38 Aluminum vs. 5252-H38 Aluminum
Both 5251-H38 aluminum and 5252-H38 aluminum are aluminum alloys. Both are furnished in the H38 temper. Their average alloy composition is basically identical.
For each property being compared, the top bar is 5251-H38 aluminum and the bottom bar is 5252-H38 aluminum.
Metric UnitsUS Customary Units
Mechanical Properties
| Brinell Hardness | 77 | |
| 75 |
| Elastic (Young's, Tensile) Modulus, GPa | 68 | |
| 68 |
| Elongation at Break, % | 2.8 | |
| 5.0 |
| Fatigue Strength, MPa | 100 | |
| 110 |
| Poisson's Ratio | 0.33 | |
| 0.33 |
| Shear Modulus, GPa | 26 | |
| 25 |
| Shear Strength, MPa | 160 | |
| 160 |
| Tensile Strength: Ultimate (UTS), MPa | 280 | |
| 290 |
| Tensile Strength: Yield (Proof), MPa | 230 | |
| 240 |
Thermal Properties
| Latent Heat of Fusion, J/g | 400 | |
| 400 |
| Maximum Temperature: Mechanical, °C | 180 | |
| 180 |
| Melting Completion (Liquidus), °C | 650 | |
| 650 |
| Melting Onset (Solidus), °C | 610 | |
| 610 |
| Specific Heat Capacity, J/kg-K | 900 | |
| 910 |
| Thermal Conductivity, W/m-K | 150 | |
| 140 |
| Thermal Expansion, µm/m-K | 24 | |
| 24 |
Electrical Properties
| Electrical Conductivity: Equal Volume, % IACS | 37 | |
| 34 |
| Electrical Conductivity: Equal Weight (Specific), % IACS | 120 | |
| 120 |
Otherwise Unclassified Properties
| Base Metal Price, % relative | 9.5 | |
| 9.5 |
| Density, g/cm3 | 2.7 | |
| 2.7 |
| Embodied Carbon, kg CO2/kg material | 8.5 | |
| 8.7 |
| Embodied Energy, MJ/kg | 150 | |
| 160 |
| Embodied Water, L/kg | 1180 | |
| 1190 |
Common Calculations
| Resilience: Ultimate (Unit Rupture Work), MJ/m3 | 7.4 | |
| 14 |
| Resilience: Unit (Modulus of Resilience), kJ/m3 | 370 | |
| 430 |
| Stiffness to Weight: Axial, points | 14 | |
| 14 |
| Stiffness to Weight: Bending, points | 50 | |
| 51 |
| Strength to Weight: Axial, points | 29 | |
| 30 |
| Strength to Weight: Bending, points | 35 | |
| 36 |
| Thermal Diffusivity, mm2/s | 61 | |
| 57 |
| Thermal Shock Resistance, points | 13 | |
| 13 |
Alloy Composition
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| Aluminum (Al), % | 95.5 to 98.2 | |
| 96.6 to 97.8 |
| Chromium (Cr), % | 0 to 0.15 | |
| 0 |
| Copper (Cu), % | 0 to 0.15 | |
| 0 to 0.1 |
| Iron (Fe), % | 0 to 0.5 | |
| 0 to 0.1 |
| Magnesium (Mg), % | 1.7 to 2.4 | |
| 2.2 to 2.8 |
| Manganese (Mn), % | 0.1 to 0.5 | |
| 0 to 0.1 |
| Silicon (Si), % | 0 to 0.4 | |
| 0 to 0.080 |
| Titanium (Ti), % | 0 to 0.15 | |
| 0 |
| Vanadium (V), % | 0 | |
| 0 to 0.050 |
| Zinc (Zn), % | 0 to 0.15 | |
| 0 to 0.050 |
| Residuals, % | 0 to 0.15 | |
| 0 to 0.1 |