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5657 Aluminum vs. EN 1.4729 Stainless Steel

5657 aluminum belongs to the aluminum alloys classification, while EN 1.4729 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 5657 aluminum and the bottom bar is EN 1.4729 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 40 to 50
260
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 6.6 to 15
15
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75

Thermal Properties

Latent Heat of Fusion, J/g 400
300
Maximum Temperature: Mechanical, °C 180
850
Melting Completion (Liquidus), °C 660
1420
Melting Onset (Solidus), °C 640
1380
Specific Heat Capacity, J/kg-K 900
490
Thermal Conductivity, W/m-K 210
24
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
2.8
Electrical Conductivity: Equal Weight (Specific), % IACS 180
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.5
Density, g/cm3 2.7
7.6
Embodied Carbon, kg CO2/kg material 8.4
2.1
Embodied Energy, MJ/kg 160
29
Embodied Water, L/kg 1200
100

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Thermal Diffusivity, mm2/s 84
6.5

Alloy Composition

Aluminum (Al), % 98.5 to 99.4
0
Carbon (C), % 0
0.3 to 0.5
Chromium (Cr), % 0
12 to 14
Copper (Cu), % 0 to 0.1
0
Gallium (Ga), % 0 to 0.030
0
Iron (Fe), % 0 to 0.1
80.4 to 86.7
Magnesium (Mg), % 0.6 to 1.0
0
Manganese (Mn), % 0 to 0.030
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 0.080
1.0 to 2.5
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0 to 0.050
0
Zinc (Zn), % 0 to 0.050
0
Residuals, % 0 to 0.050
0