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A380.0 Aluminum vs. 4145 Aluminum

Both A380.0 aluminum and 4145 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 98% of their average alloy composition in common. There are 30 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 A380.0 aluminum and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
73
Elongation at Break, % 3.3
2.2
Fatigue Strength, MPa 140
48
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
28
Shear Strength, MPa 190
69
Tensile Strength: Ultimate (UTS), MPa 290
120
Tensile Strength: Yield (Proof), MPa 160
68

Thermal Properties

Latent Heat of Fusion, J/g 510
540
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 590
590
Melting Onset (Solidus), °C 550
520
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 96
100
Thermal Expansion, µm/m-K 22
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 25
26
Electrical Conductivity: Equal Weight (Specific), % IACS 78
84

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.9
2.8
Embodied Carbon, kg CO2/kg material 7.5
7.6
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 1040
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 8.3
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 180
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 48
50
Strength to Weight: Axial, points 28
12
Strength to Weight: Bending, points 34
19
Thermal Diffusivity, mm2/s 38
42
Thermal Shock Resistance, points 13
5.5

Alloy Composition

Aluminum (Al), % 80.3 to 89.5
83 to 87.4
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 3.0 to 4.0
3.3 to 4.7
Iron (Fe), % 0 to 1.3
0 to 0.8
Magnesium (Mg), % 0 to 0.1
0 to 0.15
Manganese (Mn), % 0 to 0.5
0 to 0.15
Nickel (Ni), % 0 to 0.5
0
Silicon (Si), % 7.5 to 9.5
9.3 to 10.7
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0 to 0.2
Residuals, % 0
0 to 0.15