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B443.0 Aluminum vs. 4145 Aluminum

Both B443.0 aluminum and 4145 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 B443.0 aluminum and the bottom bar is 4145 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition


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