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6023 Aluminum vs. 2618A Aluminum

Both 6023 aluminum and 2618A aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is 6023 aluminum and the bottom bar is 2618A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
72
Elongation at Break, % 11
4.5
Fatigue Strength, MPa 120 to 130
120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 210 to 220
260
Tensile Strength: Ultimate (UTS), MPa 360
440
Tensile Strength: Yield (Proof), MPa 300 to 310
410

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 160
230
Melting Completion (Liquidus), °C 640
670
Melting Onset (Solidus), °C 580
560
Specific Heat Capacity, J/kg-K 890
880
Thermal Conductivity, W/m-K 170
150
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
37
Electrical Conductivity: Equal Weight (Specific), % IACS 140
110

Otherwise Unclassified Properties

Base Metal Price, % relative 11
11
Density, g/cm3 2.8
3.0
Embodied Carbon, kg CO2/kg material 8.3
8.4
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
19
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
1180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
47
Strength to Weight: Axial, points 35 to 36
41
Strength to Weight: Bending, points 40
44
Thermal Diffusivity, mm2/s 67
59
Thermal Shock Resistance, points 16
19

Alloy Composition


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Aluminum (Al), % 94 to 97.7
91.5 to 95.2
Bismuth (Bi), % 0.3 to 0.8
0
Copper (Cu), % 0.2 to 0.5
1.8 to 2.7
Iron (Fe), % 0 to 0.5
0.9 to 1.4
Magnesium (Mg), % 0.4 to 0.9
1.2 to 1.8
Manganese (Mn), % 0.2 to 0.6
0 to 0.25
Nickel (Ni), % 0
0.8 to 1.4
Silicon (Si), % 0.6 to 1.4
0.15 to 0.25
Tin (Sn), % 0.6 to 1.2
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.15
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0 to 0.15
0 to 0.15