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4115 Aluminum vs. SAE-AISI S5 Steel

4115 aluminum belongs to the aluminum alloys classification, while SAE-AISI S5 steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (9, 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 4115 aluminum and the bottom bar is SAE-AISI S5 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
190
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
72
Tensile Strength: Ultimate (UTS), MPa 120 to 220
680 to 1940

Thermal Properties

Latent Heat of Fusion, J/g 420
280
Melting Completion (Liquidus), °C 640
1440
Melting Onset (Solidus), °C 590
1400
Specific Heat Capacity, J/kg-K 900
480
Thermal Conductivity, W/m-K 160
42
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
3.1
Density, g/cm3 2.7
7.7
Embodied Carbon, kg CO2/kg material 8.1
2.1
Embodied Energy, MJ/kg 150
29
Embodied Water, L/kg 1160
51

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
25
Strength to Weight: Axial, points 12 to 23
25 to 70
Strength to Weight: Bending, points 20 to 30
22 to 45
Thermal Diffusivity, mm2/s 66
11
Thermal Shock Resistance, points 5.2 to 9.9
23 to 65

Alloy Composition

Aluminum (Al), % 94.6 to 97.4
0
Carbon (C), % 0
0.5 to 0.65
Chromium (Cr), % 0
0 to 0.5
Copper (Cu), % 0.1 to 0.5
0 to 0.25
Iron (Fe), % 0 to 0.7
93.6 to 97
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0.6 to 1.2
0.6 to 1.0
Molybdenum (Mo), % 0
0.2 to 1.4
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 1.8 to 2.2
1.8 to 2.3
Sulfur (S), % 0
0 to 0.030
Vanadium (V), % 0
0 to 0.35
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0

Comparable Variants