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5042 Aluminum vs. 2124 Aluminum

Both 5042 aluminum and 2124 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 5042 aluminum and the bottom bar is 2124 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 1.1 to 3.4
5.7
Fatigue Strength, MPa 97 to 120
130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 200
280
Tensile Strength: Ultimate (UTS), MPa 340 to 360
490
Tensile Strength: Yield (Proof), MPa 270 to 310
430

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
190
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 570
500
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
38
Electrical Conductivity: Equal Weight (Specific), % IACS 110
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 8.8
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6 to 12
27
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 720
1290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
46
Strength to Weight: Axial, points 35 to 37
45
Strength to Weight: Bending, points 40 to 42
46
Thermal Diffusivity, mm2/s 53
58
Thermal Shock Resistance, points 15 to 16
21

Alloy Composition

Aluminum (Al), % 94.2 to 96.8
91.3 to 94.7
Chromium (Cr), % 0 to 0.1
0 to 0.1
Copper (Cu), % 0 to 0.15
3.8 to 4.9
Iron (Fe), % 0 to 0.35
0 to 0.3
Magnesium (Mg), % 3.0 to 4.0
1.2 to 1.8
Manganese (Mn), % 0.2 to 0.5
0.3 to 0.9
Silicon (Si), % 0 to 0.2
0 to 0.2
Titanium (Ti), % 0 to 0.1
0 to 0.15
Zinc (Zn), % 0 to 0.25
0 to 0.25
Residuals, % 0
0 to 0.15