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5449 Aluminum vs. S32053 Stainless Steel

5449 aluminum belongs to the aluminum alloys classification, while S32053 stainless steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (5, 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 5449 aluminum and the bottom bar is S32053 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
210
Elongation at Break, % 4.0 to 17
46
Fatigue Strength, MPa 78 to 120
310
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
80
Shear Strength, MPa 130 to 190
510
Tensile Strength: Ultimate (UTS), MPa 210 to 330
730
Tensile Strength: Yield (Proof), MPa 91 to 260
330

Thermal Properties

Latent Heat of Fusion, J/g 400
310
Maximum Temperature: Mechanical, °C 190
1100
Melting Completion (Liquidus), °C 650
1450
Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 140
13
Thermal Expansion, µm/m-K 23
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
1.8
Electrical Conductivity: Equal Weight (Specific), % IACS 110
2.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
33
Density, g/cm3 2.8
8.1
Embodied Carbon, kg CO2/kg material 8.5
6.1
Embodied Energy, MJ/kg 150
83
Embodied Water, L/kg 1180
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 29
270
Resilience: Unit (Modulus of Resilience), kJ/m3 60 to 480
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 22 to 33
25
Strength to Weight: Bending, points 29 to 39
22
Thermal Diffusivity, mm2/s 56
3.3
Thermal Shock Resistance, points 9.4 to 15
16

Alloy Composition

Aluminum (Al), % 94.1 to 97.8
0
Carbon (C), % 0
0 to 0.030
Chromium (Cr), % 0 to 0.3
22 to 24
Copper (Cu), % 0 to 0.3
0
Iron (Fe), % 0 to 0.7
41.7 to 48.8
Magnesium (Mg), % 1.6 to 2.6
0
Manganese (Mn), % 0.6 to 1.1
0 to 1.0
Molybdenum (Mo), % 0
5.0 to 6.0
Nickel (Ni), % 0
24 to 26
Nitrogen (N), % 0
0.17 to 0.22
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0