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520.0 Aluminum vs. S82122 Stainless Steel

520.0 aluminum belongs to the aluminum alloys classification, while S82122 stainless steel belongs to the iron alloys. There are 31 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 520.0 aluminum and the bottom bar is S82122 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
260
Elastic (Young's, Tensile) Modulus, GPa 66
200
Elongation at Break, % 14
34
Fatigue Strength, MPa 55
360
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
78
Shear Strength, MPa 230
460
Tensile Strength: Ultimate (UTS), MPa 330
680
Tensile Strength: Yield (Proof), MPa 170
450

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Mechanical, °C 170
990
Melting Completion (Liquidus), °C 600
1420
Melting Onset (Solidus), °C 480
1380
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 87
15
Thermal Expansion, µm/m-K 25
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 72
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 9.8
2.6
Embodied Energy, MJ/kg 160
37
Embodied Water, L/kg 1170
150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
210
Resilience: Unit (Modulus of Resilience), kJ/m3 230
510
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 35
25
Strength to Weight: Bending, points 41
22
Thermal Diffusivity, mm2/s 37
4.0
Thermal Shock Resistance, points 14
19

Alloy Composition

Aluminum (Al), % 87.9 to 90.5
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0
20.5 to 21.5
Copper (Cu), % 0 to 0.25
0.5 to 1.5
Iron (Fe), % 0 to 0.3
68.9 to 75.4
Magnesium (Mg), % 9.5 to 10.6
0
Manganese (Mn), % 0 to 0.15
2.0 to 4.0
Molybdenum (Mo), % 0
0 to 0.6
Nickel (Ni), % 0
1.5 to 2.5
Nitrogen (N), % 0
0.15 to 0.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 0.75
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0