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A380.0 Aluminum vs. 308.0 Aluminum

Both A380.0 aluminum and 308.0 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 A380.0 aluminum and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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