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SAE-AISI 5155 Steel vs. EN AC-46100 Aluminum

SAE-AISI 5155 steel belongs to the iron alloys classification, while EN AC-46100 aluminum belongs to the aluminum alloys. There are 30 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 EN AC-46100 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
91
Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 21
1.0
Fatigue Strength, MPa 260
110
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
28
Tensile Strength: Ultimate (UTS), MPa 620
270
Tensile Strength: Yield (Proof), MPa 380
160

Thermal Properties

Latent Heat of Fusion, J/g 250
550
Maximum Temperature: Mechanical, °C 420
180
Melting Completion (Liquidus), °C 1450
600
Melting Onset (Solidus), °C 1410
540
Specific Heat Capacity, J/kg-K 470
890
Thermal Conductivity, W/m-K 49
110
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
28
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
90

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
10
Density, g/cm3 7.8
2.7
Embodied Carbon, kg CO2/kg material 1.4
7.6
Embodied Energy, MJ/kg 19
140
Embodied Water, L/kg 49
1030

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
2.3
Resilience: Unit (Modulus of Resilience), kJ/m3 380
170
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
51
Strength to Weight: Axial, points 22
27
Strength to Weight: Bending, points 21
34
Thermal Diffusivity, mm2/s 13
44
Thermal Shock Resistance, points 20
12

Alloy Composition


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Aluminum (Al), % 0
80.4 to 88.5
Carbon (C), % 0.51 to 0.59
0
Chromium (Cr), % 0.7 to 0.9
0 to 0.15
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 97.2 to 97.9
0 to 1.1
Lead (Pb), % 0
0 to 0.25
Magnesium (Mg), % 0
0 to 0.3
Manganese (Mn), % 0.7 to 0.9
0 to 0.55
Nickel (Ni), % 0
0 to 0.45
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
10 to 12
Sulfur (S), % 0 to 0.040
0
Tin (Sn), % 0
0 to 0.15
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0
0 to 1.7
Residuals, % 0
0 to 0.25