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5154A Aluminum vs. SAE-AISI 9254 Steel

5154A aluminum belongs to the aluminum alloys classification, while SAE-AISI 9254 steel belongs to the iron alloys. 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 5154A aluminum and the bottom bar is SAE-AISI 9254 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 58 to 100
200
Elastic (Young's, Tensile) Modulus, GPa 68
190
Elongation at Break, % 1.1 to 19
20
Fatigue Strength, MPa 83 to 160
280
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Shear Strength, MPa 140 to 210
410
Tensile Strength: Ultimate (UTS), MPa 230 to 370
660
Tensile Strength: Yield (Proof), MPa 96 to 320
410

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Maximum Temperature: Mechanical, °C 190
410
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
46
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 110
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.2
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.8
1.5
Embodied Energy, MJ/kg 150
20
Embodied Water, L/kg 1180
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.0 to 36
110
Resilience: Unit (Modulus of Resilience), kJ/m3 68 to 760
450
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
25
Strength to Weight: Axial, points 24 to 38
24
Strength to Weight: Bending, points 31 to 43
22
Thermal Diffusivity, mm2/s 53
12
Thermal Shock Resistance, points 10 to 16
20

Alloy Composition

Aluminum (Al), % 93.7 to 96.9
0
Carbon (C), % 0
0.51 to 0.59
Chromium (Cr), % 0 to 0.25
0.6 to 0.8
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.5
96.1 to 97.1
Magnesium (Mg), % 3.1 to 3.9
0
Manganese (Mn), % 0 to 0.5
0.6 to 0.8
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.5
1.2 to 1.6
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0