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4115 Aluminum vs. SAE-AISI H24 Steel

4115 aluminum belongs to the aluminum alloys classification, while SAE-AISI H24 steel belongs to the iron alloys. There are 21 material properties with values for both materials. Properties with values for just one material (11, 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 H24 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
200
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
78
Tensile Strength: Ultimate (UTS), MPa 120 to 220
720 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 420
240
Melting Completion (Liquidus), °C 640
1750
Melting Onset (Solidus), °C 590
1700
Specific Heat Capacity, J/kg-K 900
420
Thermal Conductivity, W/m-K 160
27
Thermal Expansion, µm/m-K 23
12

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
37
Density, g/cm3 2.7
9.1
Embodied Carbon, kg CO2/kg material 8.1
6.1
Embodied Energy, MJ/kg 150
93
Embodied Water, L/kg 1160
78

Common Calculations

Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 50
22
Strength to Weight: Axial, points 12 to 23
22 to 61
Strength to Weight: Bending, points 20 to 30
20 to 39
Thermal Diffusivity, mm2/s 66
6.9
Thermal Shock Resistance, points 5.2 to 9.9
22 to 61

Alloy Composition

Aluminum (Al), % 94.6 to 97.4
0
Carbon (C), % 0
0.42 to 0.53
Chromium (Cr), % 0
2.5 to 3.5
Copper (Cu), % 0.1 to 0.5
0 to 0.25
Iron (Fe), % 0 to 0.7
78 to 82.4
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0.6 to 1.2
0.15 to 0.4
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 1.8 to 2.2
0.15 to 0.4
Sulfur (S), % 0
0 to 0.030
Tungsten (W), % 0
14 to 16
Vanadium (V), % 0
0.4 to 0.6
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0

Comparable Variants