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5456 Aluminum vs. S44627 Stainless Steel

5456 aluminum belongs to the aluminum alloys classification, while S44627 stainless steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (4, 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 S44627 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
200
Elongation at Break, % 11 to 18
24
Fatigue Strength, MPa 130 to 210
200
Poisson's Ratio 0.33
0.27
Shear Modulus, GPa 26
80
Shear Strength, MPa 190 to 210
310
Tensile Strength: Ultimate (UTS), MPa 320 to 340
490
Tensile Strength: Yield (Proof), MPa 150 to 250
300

Thermal Properties

Latent Heat of Fusion, J/g 390
290
Maximum Temperature: Corrosion, °C 65
470
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 570
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 120
17
Thermal Expansion, µm/m-K 24
11

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
14
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 9.0
2.9
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1170
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33 to 46
100
Resilience: Unit (Modulus of Resilience), kJ/m3 170 to 470
220
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 33 to 35
18
Strength to Weight: Bending, points 38 to 40
18
Thermal Diffusivity, mm2/s 48
4.6
Thermal Shock Resistance, points 14 to 15
16

Alloy Composition

Aluminum (Al), % 92 to 94.8
0
Carbon (C), % 0
0 to 0.010
Chromium (Cr), % 0.050 to 0.2
25 to 27.5
Copper (Cu), % 0 to 0.1
0 to 0.2
Iron (Fe), % 0 to 0.4
69.2 to 74.2
Magnesium (Mg), % 4.7 to 5.5
0
Manganese (Mn), % 0.5 to 1.0
0 to 0.4
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.050 to 0.2
Nitrogen (N), % 0
0 to 0.015
Phosphorus (P), % 0
0 to 0.020
Silicon (Si), % 0 to 0.25
0 to 0.4
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0