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5454 Aluminum vs. SAE-AISI 1055 Steel

5454 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1055 steel belongs to the iron alloys. There are 31 material properties with values for both materials. Properties with values for just one material (1, 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 SAE-AISI 1055 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 61 to 93
220
Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 2.3 to 18
11 to 14
Fatigue Strength, MPa 83 to 160
260 to 390
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 140 to 200
440 to 450
Tensile Strength: Ultimate (UTS), MPa 230 to 350
730 to 750
Tensile Strength: Yield (Proof), MPa 97 to 290
400 to 630

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 190
400
Melting Completion (Liquidus), °C 650
1460
Melting Onset (Solidus), °C 600
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 130
51
Thermal Expansion, µm/m-K 24
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
11
Electrical Conductivity: Equal Weight (Specific), % IACS 110
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.7
7.8
Embodied Carbon, kg CO2/kg material 8.6
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1180
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 6.3 to 34
80 to 85
Resilience: Unit (Modulus of Resilience), kJ/m3 68 to 590
440 to 1070
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 23 to 36
26
Strength to Weight: Bending, points 30 to 41
23
Thermal Diffusivity, mm2/s 55
14
Thermal Shock Resistance, points 10 to 16
23 to 24

Alloy Composition

Aluminum (Al), % 94.5 to 97.1
0
Carbon (C), % 0
0.5 to 0.6
Chromium (Cr), % 0.050 to 0.2
0
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.4
98.4 to 98.9
Magnesium (Mg), % 2.4 to 3.0
0
Manganese (Mn), % 0.5 to 1.0
0.6 to 0.9
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0 to 0.25
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.25
0
Residuals, % 0 to 0.15
0