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7022 Aluminum vs. EN 1.4826 Stainless Steel

7022 aluminum belongs to the aluminum alloys classification, while EN 1.4826 stainless steel belongs to the iron alloys. There are 29 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 EN 1.4826 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Elongation at Break, % 6.3 to 8.0
9.1
Fatigue Strength, MPa 140 to 170
140
Poisson's Ratio 0.32
0.28
Shear Modulus, GPa 26
77
Tensile Strength: Ultimate (UTS), MPa 490 to 540
500
Tensile Strength: Yield (Proof), MPa 390 to 460
260

Thermal Properties

Latent Heat of Fusion, J/g 380
310
Maximum Temperature: Mechanical, °C 200
950
Melting Completion (Liquidus), °C 640
1400
Melting Onset (Solidus), °C 480
1360
Specific Heat Capacity, J/kg-K 870
490
Thermal Conductivity, W/m-K 140
14
Thermal Expansion, µm/m-K 24
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 65
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 10
17
Density, g/cm3 2.9
7.7
Embodied Carbon, kg CO2/kg material 8.5
3.3
Embodied Energy, MJ/kg 150
47
Embodied Water, L/kg 1130
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 40
39
Resilience: Unit (Modulus of Resilience), kJ/m3 1100 to 1500
170
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
25
Strength to Weight: Axial, points 47 to 51
18
Strength to Weight: Bending, points 47 to 50
18
Thermal Diffusivity, mm2/s 54
3.7
Thermal Shock Resistance, points 21 to 23
11

Alloy Composition

Aluminum (Al), % 87.9 to 92.4
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0.1 to 0.3
21 to 23
Copper (Cu), % 0.5 to 1.0
0
Iron (Fe), % 0 to 0.5
60.4 to 68.7
Magnesium (Mg), % 2.6 to 3.7
0
Manganese (Mn), % 0.1 to 0.4
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.5
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 4.3 to 5.2
0
Zirconium (Zr), % 0 to 0.2
0
Residuals, % 0 to 0.15
0