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5449 Aluminum vs. S28200 Stainless Steel

5449 aluminum belongs to the aluminum alloys classification, while S28200 stainless steel belongs to the iron alloys. There are 26 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 5449 aluminum and the bottom bar is S28200 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
200
Elongation at Break, % 4.0 to 17
45
Fatigue Strength, MPa 78 to 120
430
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
77
Shear Strength, MPa 130 to 190
610
Tensile Strength: Ultimate (UTS), MPa 210 to 330
870
Tensile Strength: Yield (Proof), MPa 91 to 260
460

Thermal Properties

Latent Heat of Fusion, J/g 400
290
Maximum Temperature: Mechanical, °C 190
900
Melting Completion (Liquidus), °C 650
1380
Melting Onset (Solidus), °C 590
1330
Specific Heat Capacity, J/kg-K 900
480
Thermal Expansion, µm/m-K 23
18

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
12
Density, g/cm3 2.8
7.6
Embodied Carbon, kg CO2/kg material 8.5
2.8
Embodied Energy, MJ/kg 150
41
Embodied Water, L/kg 1180
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 12 to 29
330
Resilience: Unit (Modulus of Resilience), kJ/m3 60 to 480
540
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
26
Strength to Weight: Axial, points 22 to 33
32
Strength to Weight: Bending, points 29 to 39
27
Thermal Shock Resistance, points 9.4 to 15
17

Alloy Composition

Aluminum (Al), % 94.1 to 97.8
0
Carbon (C), % 0
0 to 0.15
Chromium (Cr), % 0 to 0.3
17 to 19
Copper (Cu), % 0 to 0.3
0.75 to 1.3
Iron (Fe), % 0 to 0.7
57.7 to 64.1
Magnesium (Mg), % 1.6 to 2.6
0
Manganese (Mn), % 0.6 to 1.1
17 to 19
Molybdenum (Mo), % 0
0.75 to 1.3
Nitrogen (N), % 0
0.4 to 0.6
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0