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308.0 Aluminum vs. A380.0 Aluminum

Both 308.0 aluminum and A380.0 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is 308.0 aluminum and the bottom bar is A380.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 70
80
Elastic (Young's, Tensile) Modulus, GPa 73
73
Elongation at Break, % 2.0
3.3
Fatigue Strength, MPa 89
140
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Shear Strength, MPa 150
190
Tensile Strength: Ultimate (UTS), MPa 190
290
Tensile Strength: Yield (Proof), MPa 110
160

Thermal Properties

Latent Heat of Fusion, J/g 470
510
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 620
590
Melting Onset (Solidus), °C 540
550
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 140
96
Thermal Expansion, µm/m-K 20
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
25
Electrical Conductivity: Equal Weight (Specific), % IACS 110
78

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Calomel Potential, mV -660
-710
Density, g/cm3 2.9
2.9
Embodied Carbon, kg CO2/kg material 7.7
7.5
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 1080
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.3
8.3
Resilience: Unit (Modulus of Resilience), kJ/m3 83
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 47
48
Strength to Weight: Axial, points 18
28
Strength to Weight: Bending, points 25
34
Thermal Diffusivity, mm2/s 55
38
Thermal Shock Resistance, points 9.2
13

Alloy Composition

Aluminum (Al), % 85.7 to 91
80.3 to 89.5
Copper (Cu), % 4.0 to 5.0
3.0 to 4.0
Iron (Fe), % 0 to 1.0
0 to 1.3
Magnesium (Mg), % 0 to 0.1
0 to 0.1
Manganese (Mn), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 0
0 to 0.5
Silicon (Si), % 5.0 to 6.0
7.5 to 9.5
Tin (Sn), % 0
0 to 0.35
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 1.0
0 to 3.0
Residuals, % 0
0 to 0.5