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SAE-AISI 5155 Steel vs. 6005 Aluminum

SAE-AISI 5155 steel belongs to the iron alloys classification, while 6005 aluminum belongs to the aluminum 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 SAE-AISI 5155 steel and the bottom bar is 6005 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
90 to 95
Elastic (Young's, Tensile) Modulus, GPa 190
68
Elongation at Break, % 21
9.5 to 17
Fatigue Strength, MPa 260
55 to 95
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
26
Shear Strength, MPa 390
120 to 210
Tensile Strength: Ultimate (UTS), MPa 620
190 to 310
Tensile Strength: Yield (Proof), MPa 380
100 to 280

Thermal Properties

Latent Heat of Fusion, J/g 250
410
Maximum Temperature: Mechanical, °C 420
160
Melting Completion (Liquidus), °C 1450
650
Melting Onset (Solidus), °C 1410
610
Specific Heat Capacity, J/kg-K 470
900
Thermal Conductivity, W/m-K 49
180 to 200
Thermal Expansion, µm/m-K 12
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
54
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
180

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
8.3
Embodied Energy, MJ/kg 19
150
Embodied Water, L/kg 49
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
27 to 36
Resilience: Unit (Modulus of Resilience), kJ/m3 380
77 to 550
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 22
20 to 32
Strength to Weight: Bending, points 21
28 to 38
Thermal Diffusivity, mm2/s 13
74 to 83
Thermal Shock Resistance, points 20
8.6 to 14

Alloy Composition


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Aluminum (Al), % 0
97.5 to 99
Carbon (C), % 0.51 to 0.59
0
Chromium (Cr), % 0.7 to 0.9
0 to 0.1
Copper (Cu), % 0
0 to 0.1
Iron (Fe), % 97.2 to 97.9
0 to 0.35
Magnesium (Mg), % 0
0.4 to 0.6
Manganese (Mn), % 0.7 to 0.9
0 to 0.1
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0.6 to 0.9
Sulfur (S), % 0 to 0.040
0
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15