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5042 Aluminum vs. 7050 Aluminum

Both 5042 aluminum and 7050 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is 5042 aluminum and the bottom bar is 7050 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 1.1 to 3.4
2.2 to 12
Fatigue Strength, MPa 97 to 120
130 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 200
280 to 330
Tensile Strength: Ultimate (UTS), MPa 340 to 360
490 to 570
Tensile Strength: Yield (Proof), MPa 270 to 310
390 to 500

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 180
190
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 570
490
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 130
140
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
35
Electrical Conductivity: Equal Weight (Specific), % IACS 110
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.8
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6 to 12
10 to 55
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 720
1110 to 1760
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 35 to 37
45 to 51
Strength to Weight: Bending, points 40 to 42
45 to 50
Thermal Diffusivity, mm2/s 53
54
Thermal Shock Resistance, points 15 to 16
21 to 25

Alloy Composition


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Aluminum (Al), % 94.2 to 96.8
87.3 to 92.1
Chromium (Cr), % 0 to 0.1
0 to 0.040
Copper (Cu), % 0 to 0.15
2.0 to 2.6
Iron (Fe), % 0 to 0.35
0 to 0.15
Magnesium (Mg), % 3.0 to 4.0
1.9 to 2.6
Manganese (Mn), % 0.2 to 0.5
0 to 0.1
Silicon (Si), % 0 to 0.2
0 to 0.12
Titanium (Ti), % 0 to 0.1
0 to 0.060
Zinc (Zn), % 0 to 0.25
5.7 to 6.7
Zirconium (Zr), % 0
0.080 to 0.15
Residuals, % 0 to 0.15
0 to 0.15