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308.0 Aluminum vs. B390.0 Aluminum

Both 308.0 aluminum and B390.0 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 88% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 308.0 aluminum and the bottom bar is B390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
76
Elongation at Break, % 2.0
0.88
Fatigue Strength, MPa 89
170
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
29
Tensile Strength: Ultimate (UTS), MPa 190
320
Tensile Strength: Yield (Proof), MPa 110
250

Thermal Properties

Latent Heat of Fusion, J/g 470
640
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 620
580
Melting Onset (Solidus), °C 540
580
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 140
130
Thermal Expansion, µm/m-K 20
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
27
Electrical Conductivity: Equal Weight (Specific), % IACS 110
88

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 2.9
2.8
Embodied Carbon, kg CO2/kg material 7.7
7.3
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 1080
940

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.3
2.6
Resilience: Unit (Modulus of Resilience), kJ/m3 83
410
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 47
51
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 25
38
Thermal Diffusivity, mm2/s 55
55
Thermal Shock Resistance, points 9.2
15

Alloy Composition


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Aluminum (Al), % 85.7 to 91
72.7 to 79.6
Copper (Cu), % 4.0 to 5.0
4.0 to 5.0
Iron (Fe), % 0 to 1.0
0 to 1.3
Magnesium (Mg), % 0 to 0.1
0.45 to 0.65
Manganese (Mn), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 0
0 to 0.1
Silicon (Si), % 5.0 to 6.0
16 to 18
Titanium (Ti), % 0 to 0.25
0 to 0.1
Zinc (Zn), % 0 to 1.0
0 to 1.5
Residuals, % 0 to 0.5
0 to 0.2