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4115 Aluminum vs. SAE-AISI 1022 Steel

4115 aluminum belongs to the aluminum alloys classification, while SAE-AISI 1022 steel belongs to the iron 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 4115 aluminum and the bottom bar is SAE-AISI 1022 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 38 to 68
150 to 160
Elastic (Young's, Tensile) Modulus, GPa 70
190
Elongation at Break, % 1.1 to 11
17 to 26
Fatigue Strength, MPa 39 to 76
190 to 300
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 71 to 130
310 to 340
Tensile Strength: Ultimate (UTS), MPa 120 to 220
480 to 550
Tensile Strength: Yield (Proof), MPa 39 to 190
260 to 450

Thermal Properties

Latent Heat of Fusion, J/g 420
250
Maximum Temperature: Mechanical, °C 160
400
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 590
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 160
52
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
1.8
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.1
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1160
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.1 to 10
88 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 11 to 270
190 to 530
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 12 to 23
17 to 19
Strength to Weight: Bending, points 20 to 30
17 to 19
Thermal Diffusivity, mm2/s 66
14
Thermal Shock Resistance, points 5.2 to 9.9
15 to 17

Alloy Composition

Aluminum (Al), % 94.6 to 97.4
0
Carbon (C), % 0
0.18 to 0.23
Copper (Cu), % 0.1 to 0.5
0
Iron (Fe), % 0 to 0.7
98.7 to 99.12
Magnesium (Mg), % 0.1 to 0.5
0
Manganese (Mn), % 0.6 to 1.2
0.7 to 1.0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 1.8 to 2.2
0
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.2
0
Residuals, % 0 to 0.15
0