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520.0 Aluminum vs. S32550 Stainless Steel

520.0 aluminum belongs to the aluminum alloys classification, while S32550 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 S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 75
260
Elastic (Young's, Tensile) Modulus, GPa 66
200
Elongation at Break, % 14
21
Fatigue Strength, MPa 55
400
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 25
80
Shear Strength, MPa 230
540
Tensile Strength: Ultimate (UTS), MPa 330
860
Tensile Strength: Yield (Proof), MPa 170
620

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Mechanical, °C 170
1100
Melting Completion (Liquidus), °C 600
1440
Melting Onset (Solidus), °C 480
1390
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 87
16
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
20
Density, g/cm3 2.6
7.8
Embodied Carbon, kg CO2/kg material 9.8
3.8
Embodied Energy, MJ/kg 160
53
Embodied Water, L/kg 1170
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
160
Resilience: Unit (Modulus of Resilience), kJ/m3 230
940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 35
31
Strength to Weight: Bending, points 41
26
Thermal Diffusivity, mm2/s 37
4.4
Thermal Shock Resistance, points 14
23

Alloy Composition

Aluminum (Al), % 87.9 to 90.5
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
24 to 27
Copper (Cu), % 0 to 0.25
1.5 to 2.5
Iron (Fe), % 0 to 0.3
57.2 to 67
Magnesium (Mg), % 9.5 to 10.6
0
Manganese (Mn), % 0 to 0.15
0 to 1.5
Molybdenum (Mo), % 0
2.9 to 3.9
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0