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5456 Aluminum vs. EN 1.4740 Stainless Steel

5456 aluminum belongs to the aluminum alloys classification, while EN 1.4740 stainless steel belongs to the iron alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 5456 aluminum and the bottom bar is EN 1.4740 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 11 to 18
22
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77

Thermal Properties

Latent Heat of Fusion, J/g 390
300
Maximum Temperature: Corrosion, °C 65
410
Maximum Temperature: Mechanical, °C 190
900
Melting Completion (Liquidus), °C 640
1420
Melting Onset (Solidus), °C 570
1370
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 120
18
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 29
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 97
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
7.6
Embodied Carbon, kg CO2/kg material 9.0
2.3
Embodied Energy, MJ/kg 150
32
Embodied Water, L/kg 1170
120

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Thermal Diffusivity, mm2/s 48
4.8

Alloy Composition

Aluminum (Al), % 92 to 94.8
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0.050 to 0.2
16 to 19
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.4
75.4 to 82.7
Magnesium (Mg), % 4.7 to 5.5
0
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0