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EN 1.4470 Stainless Steel vs. 5456 Aluminum

EN 1.4470 stainless steel belongs to the iron alloys classification, while 5456 aluminum belongs to the aluminum alloys. There are 30 material properties with values for both materials. Properties with values for just one material (3, 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 1.4470 stainless steel and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
68
Elongation at Break, % 23
11 to 18
Fatigue Strength, MPa 320
130 to 210
Poisson's Ratio 0.27
0.33
Shear Modulus, GPa 80
26
Tensile Strength: Ultimate (UTS), MPa 680
320 to 340
Tensile Strength: Yield (Proof), MPa 480
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 300
390
Maximum Temperature: Corrosion, °C 430
65
Maximum Temperature: Mechanical, °C 1060
190
Melting Completion (Liquidus), °C 1450
640
Melting Onset (Solidus), °C 1400
570
Specific Heat Capacity, J/kg-K 480
900
Thermal Conductivity, W/m-K 18
120
Thermal Expansion, µm/m-K 13
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
29
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
97

Otherwise Unclassified Properties

Base Metal Price, % relative 17
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 3.6
9.0
Embodied Energy, MJ/kg 49
150
Embodied Water, L/kg 160
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 570
170 to 470
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
50
Strength to Weight: Axial, points 24
33 to 35
Strength to Weight: Bending, points 22
38 to 40
Thermal Diffusivity, mm2/s 4.8
48
Thermal Shock Resistance, points 18
14 to 15

Alloy Composition

Aluminum (Al), % 0
92 to 94.8
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 21 to 23
0.050 to 0.2
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 63.7 to 71.9
0 to 0.4
Magnesium (Mg), % 0
4.7 to 5.5
Manganese (Mn), % 0 to 2.0
0.5 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 4.5 to 6.5
0
Nitrogen (N), % 0.12 to 0.2
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0 to 1.0
0 to 0.25
Sulfur (S), % 0 to 0.025
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15