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EN 1.3549 Stainless Steel vs. 5456 Aluminum

EN 1.3549 stainless steel belongs to the iron alloys classification, while 5456 aluminum belongs to the aluminum alloys. There are 25 material properties with values for both materials. Properties with values for just one material (8, 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 EN 1.3549 stainless steel and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 77
26
Tensile Strength: Ultimate (UTS), MPa 730
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 280
390
Maximum Temperature: Corrosion, °C 400
65
Maximum Temperature: Mechanical, °C 910
190
Melting Completion (Liquidus), °C 1430
640
Melting Onset (Solidus), °C 1390
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 21
120
Thermal Expansion, µm/m-K 10
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
97

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 7.7
2.7
Embodied Carbon, kg CO2/kg material 2.6
9.0
Embodied Energy, MJ/kg 37
150
Embodied Water, L/kg 130
1170

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 27
33 to 35
Strength to Weight: Bending, points 24
38 to 40
Thermal Diffusivity, mm2/s 5.6
48
Thermal Shock Resistance, points 26
14 to 15

Alloy Composition

Aluminum (Al), % 0
92 to 94.8
Carbon (C), % 0.85 to 1.0
0
Chromium (Cr), % 17 to 19
0.050 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 77.5 to 82
0 to 0.4
Magnesium (Mg), % 0
4.7 to 5.5
Manganese (Mn), % 0 to 1.0
0.5 to 1.0
Molybdenum (Mo), % 0.9 to 1.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0 to 0.25
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0
0 to 0.2
Vanadium (V), % 0.070 to 0.12
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15