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7022 Aluminum vs. Grade VDCrV Steel

7022 aluminum belongs to the aluminum alloys classification, while grade VDCrV steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 7022 aluminum and the bottom bar is grade VDCrV steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 26
80
Tensile Strength: Ultimate (UTS), MPa 490 to 540
1730

Thermal Properties

Latent Heat of Fusion, J/g 380
250
Maximum Temperature: Mechanical, °C 200
410
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 480
1410
Specific Heat Capacity, J/kg-K 870
470
Thermal Conductivity, W/m-K 140
49
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 65
8.2

Otherwise Unclassified Properties

Base Metal Price, % relative 10
2.1
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.5
1.9
Embodied Energy, MJ/kg 150
26
Embodied Water, L/kg 1130
49

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 47 to 51
61
Strength to Weight: Bending, points 47 to 50
41
Thermal Diffusivity, mm2/s 54
13
Thermal Shock Resistance, points 21 to 23
51

Alloy Composition

Aluminum (Al), % 87.9 to 92.4
0
Carbon (C), % 0
0.62 to 0.72
Chromium (Cr), % 0.1 to 0.3
0.4 to 0.6
Copper (Cu), % 0.5 to 1.0
0 to 0.060
Iron (Fe), % 0 to 0.5
97.8 to 98.8
Magnesium (Mg), % 2.6 to 3.7
0
Manganese (Mn), % 0.1 to 0.4
0.5 to 0.9
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.5
0.15 to 0.3
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0.15 to 0.25
Zinc (Zn), % 4.3 to 5.2
0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0 to 0.15
0