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384.0 Aluminum vs. 308.0 Aluminum

Both 384.0 aluminum and 308.0 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 93% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 384.0 aluminum and the bottom bar is 308.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 85
70
Elastic (Young's, Tensile) Modulus, GPa 74
73
Elongation at Break, % 2.5
2.0
Fatigue Strength, MPa 140
89
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
27
Shear Strength, MPa 200
150
Tensile Strength: Ultimate (UTS), MPa 330
190
Tensile Strength: Yield (Proof), MPa 170
110

Thermal Properties

Latent Heat of Fusion, J/g 550
470
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 580
620
Melting Onset (Solidus), °C 530
540
Specific Heat Capacity, J/kg-K 870
870
Thermal Conductivity, W/m-K 96
140
Thermal Expansion, µm/m-K 21
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
37
Electrical Conductivity: Equal Weight (Specific), % IACS 69
110

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.9
2.9
Embodied Carbon, kg CO2/kg material 7.4
7.7
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 1010
1080

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
3.3
Resilience: Unit (Modulus of Resilience), kJ/m3 190
83
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
47
Strength to Weight: Axial, points 32
18
Strength to Weight: Bending, points 37
25
Thermal Diffusivity, mm2/s 39
55
Thermal Shock Resistance, points 15
9.2

Alloy Composition


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Aluminum (Al), % 77.3 to 86.5
85.7 to 91
Copper (Cu), % 3.0 to 4.5
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), % 10.5 to 12
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 to 0.5
0 to 0.5