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A242.0 Aluminum vs. 7020 Aluminum

Both A242.0 aluminum and 7020 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is A242.0 aluminum and the bottom bar is 7020 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
45 to 100
Elastic (Young's, Tensile) Modulus, GPa 73
70
Elongation at Break, % 1.6
8.4 to 14
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Tensile Strength: Ultimate (UTS), MPa 220
190 to 390

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 210
210
Melting Completion (Liquidus), °C 680
650
Melting Onset (Solidus), °C 550
610
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 140
150
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
39
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Base Metal Price, % relative 12
9.5
Density, g/cm3 3.1
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1150

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
47
Strength to Weight: Axial, points 20
18 to 37
Strength to Weight: Bending, points 26
25 to 41
Thermal Diffusivity, mm2/s 52
59
Thermal Shock Resistance, points 9.3
8.3 to 17

Alloy Composition


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Aluminum (Al), % 89.3 to 93.1
91.2 to 94.8
Chromium (Cr), % 0.15 to 0.25
0.1 to 0.35
Copper (Cu), % 3.7 to 4.5
0 to 0.2
Iron (Fe), % 0 to 0.8
0 to 0.4
Magnesium (Mg), % 1.2 to 1.7
1.0 to 1.4
Manganese (Mn), % 0 to 0.1
0.050 to 0.5
Nickel (Ni), % 1.8 to 2.3
0
Silicon (Si), % 0 to 0.6
0 to 0.35
Titanium (Ti), % 0.070 to 0.2
0 to 0.25
Zinc (Zn), % 0 to 0.1
4.0 to 5.0
Zirconium (Zr), % 0
0.080 to 0.25
Residuals, % 0 to 0.15
0 to 0.15