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384.0 Aluminum vs. 4145 Aluminum

Both 384.0 aluminum and 4145 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 96% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 384.0 aluminum and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 74
73
Elongation at Break, % 2.5
2.2
Fatigue Strength, MPa 140
48
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
28
Shear Strength, MPa 200
69
Tensile Strength: Ultimate (UTS), MPa 330
120
Tensile Strength: Yield (Proof), MPa 170
68

Thermal Properties

Latent Heat of Fusion, J/g 550
540
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 580
590
Melting Onset (Solidus), °C 530
520
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 96
100
Thermal Expansion, µm/m-K 21
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 22
26
Electrical Conductivity: Equal Weight (Specific), % IACS 69
84

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.9
2.8
Embodied Carbon, kg CO2/kg material 7.4
7.6
Embodied Energy, MJ/kg 140
140
Embodied Water, L/kg 1010
1040

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.9
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 190
31
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
50
Strength to Weight: Axial, points 32
12
Strength to Weight: Bending, points 37
19
Thermal Diffusivity, mm2/s 39
42
Thermal Shock Resistance, points 15
5.5

Alloy Composition


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Aluminum (Al), % 77.3 to 86.5
83 to 87.4
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 3.0 to 4.5
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), % 10.5 to 12
9.3 to 10.7
Tin (Sn), % 0 to 0.35
0
Zinc (Zn), % 0 to 3.0
0 to 0.2
Residuals, % 0 to 0.5
0 to 0.15