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4145 Aluminum vs. 6023 Aluminum

Both 4145 aluminum and 6023 aluminum are aluminum alloys. They have 87% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 4145 aluminum and the bottom bar is 6023 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
69
Elongation at Break, % 2.2
11
Fatigue Strength, MPa 48
120 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 28
26
Shear Strength, MPa 69
210 to 220
Tensile Strength: Ultimate (UTS), MPa 120
360
Tensile Strength: Yield (Proof), MPa 68
300 to 310

Thermal Properties

Latent Heat of Fusion, J/g 540
400
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 590
640
Melting Onset (Solidus), °C 520
580
Specific Heat Capacity, J/kg-K 880
890
Thermal Conductivity, W/m-K 100
170
Thermal Expansion, µm/m-K 21
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 26
45
Electrical Conductivity: Equal Weight (Specific), % IACS 84
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
11
Density, g/cm3 2.8
2.8
Embodied Carbon, kg CO2/kg material 7.6
8.3
Embodied Energy, MJ/kg 140
150
Embodied Water, L/kg 1040
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.3
38 to 39
Resilience: Unit (Modulus of Resilience), kJ/m3 31
670 to 690
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
49
Strength to Weight: Axial, points 12
35 to 36
Strength to Weight: Bending, points 19
40
Thermal Diffusivity, mm2/s 42
67
Thermal Shock Resistance, points 5.5
16

Alloy Composition

Aluminum (Al), % 83 to 87.4
94 to 97.7
Bismuth (Bi), % 0
0.3 to 0.8
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 3.3 to 4.7
0.2 to 0.5
Iron (Fe), % 0 to 0.8
0 to 0.5
Magnesium (Mg), % 0 to 0.15
0.4 to 0.9
Manganese (Mn), % 0 to 0.15
0.2 to 0.6
Silicon (Si), % 9.3 to 10.7
0.6 to 1.4
Tin (Sn), % 0
0.6 to 1.2
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0
0 to 0.15