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7022 Aluminum vs. AWS ER90S-B9

7022 aluminum belongs to the aluminum alloys classification, while AWS ER90S-B9 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, 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 AWS ER90S-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 6.3 to 8.0
18
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 490 to 540
690
Tensile Strength: Yield (Proof), MPa 390 to 460
470

Thermal Properties

Latent Heat of Fusion, J/g 380
270
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
25
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 65
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.5
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1130
91

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 40
110
Resilience: Unit (Modulus of Resilience), kJ/m3 1100 to 1500
570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 47 to 51
25
Strength to Weight: Bending, points 47 to 50
22
Thermal Diffusivity, mm2/s 54
6.9
Thermal Shock Resistance, points 21 to 23
19

Alloy Composition

Aluminum (Al), % 87.9 to 92.4
0 to 0.040
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0.1 to 0.3
8.0 to 10.5
Copper (Cu), % 0.5 to 1.0
0 to 0.2
Iron (Fe), % 0 to 0.5
84.4 to 90.7
Magnesium (Mg), % 2.6 to 3.7
0
Manganese (Mn), % 0.1 to 0.4
0 to 1.2
Molybdenum (Mo), % 0
0.85 to 1.2
Nickel (Ni), % 0
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0 to 0.5
0.15 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0.15 to 0.3
Zinc (Zn), % 4.3 to 5.2
0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0
0 to 0.5