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SAE-AISI 5155 Steel vs. 5010 Aluminum

SAE-AISI 5155 steel belongs to the iron alloys classification, while 5010 aluminum belongs to the aluminum 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 SAE-AISI 5155 steel and the bottom bar is 5010 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
27 to 62
Elastic (Young's, Tensile) Modulus, GPa 190
69
Elongation at Break, % 21
1.1 to 23
Fatigue Strength, MPa 260
35 to 83
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 390
64 to 120
Tensile Strength: Ultimate (UTS), MPa 620
100 to 210
Tensile Strength: Yield (Proof), MPa 380
38 to 190

Thermal Properties

Latent Heat of Fusion, J/g 250
400
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1450
650
Melting Onset (Solidus), °C 1410
630
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 49
200
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
45
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
150

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
9.5
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.4
8.2
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 49
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
2.3 to 20
Resilience: Unit (Modulus of Resilience), kJ/m3 380
10 to 270
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 22
10 to 22
Strength to Weight: Bending, points 21
18 to 29
Thermal Diffusivity, mm2/s 13
82
Thermal Shock Resistance, points 20
4.5 to 9.4

Alloy Composition


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Aluminum (Al), % 0
97.1 to 99.7
Carbon (C), % 0.51 to 0.59
0
Chromium (Cr), % 0.7 to 0.9
0 to 0.15
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 97.2 to 97.9
0 to 0.7
Magnesium (Mg), % 0
0.2 to 0.6
Manganese (Mn), % 0.7 to 0.9
0.1 to 0.3
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0 to 0.4
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.3
Residuals, % 0
0 to 0.15