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520.0 Aluminum vs. AISI 422 Stainless Steel

520.0 aluminum belongs to the aluminum alloys classification, while AISI 422 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (5, 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 AISI 422 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
260 to 330
Elastic (Young's, Tensile) Modulus, GPa 66
200
Elongation at Break, % 14
15 to 17
Fatigue Strength, MPa 55
410 to 500
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
76
Shear Strength, MPa 230
560 to 660
Tensile Strength: Ultimate (UTS), MPa 330
910 to 1080
Tensile Strength: Yield (Proof), MPa 170
670 to 870

Thermal Properties

Latent Heat of Fusion, J/g 390
270
Maximum Temperature: Mechanical, °C 170
650
Melting Completion (Liquidus), °C 600
1480
Melting Onset (Solidus), °C 480
1470
Specific Heat Capacity, J/kg-K 910
470
Thermal Conductivity, W/m-K 87
24
Thermal Expansion, µm/m-K 25
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
4.7
Electrical Conductivity: Equal Weight (Specific), % IACS 72
5.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.6
7.9
Embodied Carbon, kg CO2/kg material 9.8
3.1
Embodied Energy, MJ/kg 160
44
Embodied Water, L/kg 1170
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
140 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 230
1140 to 1910
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 35
32 to 38
Strength to Weight: Bending, points 41
26 to 30
Thermal Diffusivity, mm2/s 37
6.4
Thermal Shock Resistance, points 14
33 to 39

Alloy Composition

Aluminum (Al), % 87.9 to 90.5
0
Carbon (C), % 0
0.2 to 0.25
Chromium (Cr), % 0
11 to 12.5
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.3
81.9 to 85.8
Magnesium (Mg), % 9.5 to 10.6
0
Manganese (Mn), % 0 to 0.15
0.5 to 1.0
Molybdenum (Mo), % 0
0.9 to 1.3
Nickel (Ni), % 0
0.5 to 1.0
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0 to 0.25
0 to 0.5
Sulfur (S), % 0
0 to 0.025
Titanium (Ti), % 0 to 0.25
0
Tungsten (W), % 0
0.9 to 1.3
Vanadium (V), % 0
0.2 to 0.3
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0