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520.0 Aluminum vs. AISI 440A Stainless Steel

520.0 aluminum belongs to the aluminum alloys classification, while AISI 440A stainless steel belongs to the iron alloys. There are 29 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 440A stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 66
200
Elongation at Break, % 14
5.0 to 20
Fatigue Strength, MPa 55
270 to 790
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 25
77
Shear Strength, MPa 230
450 to 1040
Tensile Strength: Ultimate (UTS), MPa 330
730 to 1790
Tensile Strength: Yield (Proof), MPa 170
420 to 1650

Thermal Properties

Latent Heat of Fusion, J/g 390
280
Maximum Temperature: Mechanical, °C 170
760
Melting Completion (Liquidus), °C 600
1480
Melting Onset (Solidus), °C 480
1370
Specific Heat Capacity, J/kg-K 910
480
Thermal Conductivity, W/m-K 87
23
Thermal Expansion, µm/m-K 25
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 21
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 72
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.6
7.7
Embodied Carbon, kg CO2/kg material 9.8
2.2
Embodied Energy, MJ/kg 160
31
Embodied Water, L/kg 1170
120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 39
87 to 120
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 52
25
Strength to Weight: Axial, points 35
26 to 65
Strength to Weight: Bending, points 41
23 to 43
Thermal Diffusivity, mm2/s 37
6.2
Thermal Shock Resistance, points 14
26 to 65

Alloy Composition

Aluminum (Al), % 87.9 to 90.5
0
Carbon (C), % 0
0.6 to 0.75
Chromium (Cr), % 0
16 to 18
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 0 to 0.3
78.4 to 83.4
Magnesium (Mg), % 9.5 to 10.6
0
Manganese (Mn), % 0 to 0.15
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.75
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0
0 to 0.015
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.15
0
Residuals, % 0 to 0.15
0