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AISI 205 Stainless Steel vs. 7022 Aluminum

AISI 205 stainless steel belongs to the iron alloys classification, while 7022 aluminum belongs to the aluminum alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, 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 AISI 205 stainless steel and the bottom bar is 7022 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 11 to 51
6.3 to 8.0
Fatigue Strength, MPa 410 to 640
140 to 170
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 77
26
Shear Strength, MPa 560 to 850
290 to 320
Tensile Strength: Ultimate (UTS), MPa 800 to 1430
490 to 540
Tensile Strength: Yield (Proof), MPa 450 to 1100
390 to 460

Thermal Properties

Latent Heat of Fusion, J/g 280
380
Maximum Temperature: Mechanical, °C 880
200
Melting Completion (Liquidus), °C 1380
640
Melting Onset (Solidus), °C 1340
480
Specific Heat Capacity, J/kg-K 480
870
Thermal Expansion, µm/m-K 18
24

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 7.6
2.9
Embodied Carbon, kg CO2/kg material 2.6
8.5
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 150
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150 to 430
29 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 510 to 3060
1100 to 1500
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
47
Strength to Weight: Axial, points 29 to 52
47 to 51
Strength to Weight: Bending, points 25 to 37
47 to 50
Thermal Shock Resistance, points 16 to 29
21 to 23

Alloy Composition

Aluminum (Al), % 0
87.9 to 92.4
Carbon (C), % 0.12 to 0.25
0
Chromium (Cr), % 16.5 to 18.5
0.1 to 0.3
Copper (Cu), % 0
0.5 to 1.0
Iron (Fe), % 62.6 to 68.1
0 to 0.5
Magnesium (Mg), % 0
2.6 to 3.7
Manganese (Mn), % 14 to 15.5
0.1 to 0.4
Nickel (Ni), % 1.0 to 1.7
0
Nitrogen (N), % 0.32 to 0.4
0
Phosphorus (P), % 0 to 0.060
0
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
4.3 to 5.2
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15