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4145 Aluminum vs. 240.0 Aluminum

Both 4145 aluminum and 240.0 aluminum are aluminum alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 89% of their average alloy composition in common. There are 29 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 4145 aluminum and the bottom bar is 240.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
72
Elongation at Break, % 2.2
1.0
Fatigue Strength, MPa 48
140
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
27
Tensile Strength: Ultimate (UTS), MPa 120
240
Tensile Strength: Yield (Proof), MPa 68
200

Thermal Properties

Latent Heat of Fusion, J/g 540
380
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 590
600
Melting Onset (Solidus), °C 520
520
Specific Heat Capacity, J/kg-K 880
860
Thermal Conductivity, W/m-K 100
96
Thermal Expansion, µm/m-K 21
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
23
Electrical Conductivity: Equal Weight (Specific), % IACS 84
65

Otherwise Unclassified Properties

Base Metal Price, % relative 10
12
Density, g/cm3 2.8
3.2
Embodied Carbon, kg CO2/kg material 7.6
8.7
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1040
1100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
2.2
Resilience: Unit (Modulus of Resilience), kJ/m3 31
280
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 50
43
Strength to Weight: Axial, points 12
20
Strength to Weight: Bending, points 19
26
Thermal Diffusivity, mm2/s 42
35
Thermal Shock Resistance, points 5.5
11

Alloy Composition


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Aluminum (Al), % 83 to 87.4
81.7 to 86.9
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
7.0 to 9.0
Iron (Fe), % 0 to 0.8
0 to 0.5
Magnesium (Mg), % 0 to 0.15
5.5 to 6.5
Manganese (Mn), % 0 to 0.15
0.3 to 0.7
Nickel (Ni), % 0
0.3 to 0.7
Silicon (Si), % 9.3 to 10.7
0 to 0.5
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.2
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.15