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4145 Aluminum vs. 390.0 Aluminum

Both 4145 aluminum and 390.0 aluminum are aluminum alloys. They have a moderately high 92% 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 4145 aluminum and the bottom bar is 390.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
75
Elongation at Break, % 2.2
1.0
Fatigue Strength, MPa 48
76 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
28
Tensile Strength: Ultimate (UTS), MPa 120
280 to 300
Tensile Strength: Yield (Proof), MPa 68
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 540
640
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 590
650
Melting Onset (Solidus), °C 520
560
Specific Heat Capacity, J/kg-K 880
880
Thermal Conductivity, W/m-K 100
130
Thermal Expansion, µm/m-K 21
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
24 to 25
Electrical Conductivity: Equal Weight (Specific), % IACS 84
79 to 83

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 2.8
2.7
Embodied Carbon, kg CO2/kg material 7.6
7.3
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 1040
950

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
2.7 to 2.9
Resilience: Unit (Modulus of Resilience), kJ/m3 31
380 to 470
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
52
Strength to Weight: Axial, points 12
28 to 30
Strength to Weight: Bending, points 19
35 to 36
Thermal Diffusivity, mm2/s 42
56
Thermal Shock Resistance, points 5.5
14 to 15

Alloy Composition


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Aluminum (Al), % 83 to 87.4
74.5 to 79.6
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
4.0 to 5.0
Iron (Fe), % 0 to 0.8
0 to 1.3
Magnesium (Mg), % 0 to 0.15
0.45 to 0.65
Manganese (Mn), % 0 to 0.15
0 to 0.1
Silicon (Si), % 9.3 to 10.7
16 to 18
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.2
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.2