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5454 Aluminum vs. S41050 Stainless Steel

5454 aluminum belongs to the aluminum alloys classification, while S41050 stainless steel belongs to the iron alloys. There are 31 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 5454 aluminum and the bottom bar is S41050 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 61 to 93
160
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 2.3 to 18
25
Fatigue Strength, MPa 83 to 160
160
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
76
Shear Strength, MPa 140 to 200
300
Tensile Strength: Ultimate (UTS), MPa 230 to 350
470
Tensile Strength: Yield (Proof), MPa 97 to 290
230

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 190
720
Melting Completion (Liquidus), °C 650
1440
Melting Onset (Solidus), °C 600
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 130
27
Thermal Expansion, µm/m-K 24
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
7.0
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.6
1.9
Embodied Energy, MJ/kg 150
27
Embodied Water, L/kg 1180
97

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3 to 34
98
Resilience: Unit (Modulus of Resilience), kJ/m3 68 to 590
140
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 23 to 36
17
Strength to Weight: Bending, points 30 to 41
17
Thermal Diffusivity, mm2/s 55
7.2
Thermal Shock Resistance, points 10 to 16
17

Alloy Composition

Aluminum (Al), % 94.5 to 97.1
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0.050 to 0.2
10.5 to 12.5
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.4
84.2 to 88.9
Magnesium (Mg), % 2.4 to 3.0
0
Manganese (Mn), % 0.5 to 1.0
0 to 1.0
Nickel (Ni), % 0
0.6 to 1.1
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0
0 to 0.045
Silicon (Si), % 0 to 0.25
0 to 1.0
Sulfur (S), % 0
0 to 0.030
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0