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4145 Aluminum vs. B443.0 Aluminum

Both 4145 aluminum and B443.0 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 91% 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 4145 aluminum and the bottom bar is B443.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
70
Elongation at Break, % 2.2
4.9
Fatigue Strength, MPa 48
55
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
26
Shear Strength, MPa 69
110
Tensile Strength: Ultimate (UTS), MPa 120
150
Tensile Strength: Yield (Proof), MPa 68
50

Thermal Properties

Latent Heat of Fusion, J/g 540
470
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 590
620
Melting Onset (Solidus), °C 520
600
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 100
150
Thermal Expansion, µm/m-K 21
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
38
Electrical Conductivity: Equal Weight (Specific), % IACS 84
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 2.8
2.7
Embodied Carbon, kg CO2/kg material 7.6
8.0
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1040
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
5.6
Resilience: Unit (Modulus of Resilience), kJ/m3 31
18
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
52
Strength to Weight: Axial, points 12
15
Strength to Weight: Bending, points 19
23
Thermal Diffusivity, mm2/s 42
61
Thermal Shock Resistance, points 5.5
6.8

Alloy Composition


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Aluminum (Al), % 83 to 87.4
91.9 to 95.5
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
0 to 0.15
Iron (Fe), % 0 to 0.8
0 to 0.8
Magnesium (Mg), % 0 to 0.15
0 to 0.050
Manganese (Mn), % 0 to 0.15
0 to 0.35
Silicon (Si), % 9.3 to 10.7
4.5 to 6.0
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.2
0 to 0.35
Residuals, % 0 to 0.15
0 to 0.15