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3102 Aluminum vs. SAE-AISI 4615 Steel

3102 aluminum belongs to the aluminum alloys classification, while SAE-AISI 4615 steel belongs to the iron 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 3102 aluminum and the bottom bar is SAE-AISI 4615 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 23 to 28
27
Fatigue Strength, MPa 31 to 34
260
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 26
73
Shear Strength, MPa 58 to 65
310
Tensile Strength: Ultimate (UTS), MPa 92 to 100
480
Tensile Strength: Yield (Proof), MPa 28 to 34
350

Thermal Properties

Latent Heat of Fusion, J/g 400
250
Maximum Temperature: Mechanical, °C 180
410
Melting Completion (Liquidus), °C 640
1460
Melting Onset (Solidus), °C 640
1420
Specific Heat Capacity, J/kg-K 900
470
Thermal Conductivity, W/m-K 230
47
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 190
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
3.2
Density, g/cm3 2.7
7.9
Embodied Carbon, kg CO2/kg material 8.2
1.6
Embodied Energy, MJ/kg 150
22
Embodied Water, L/kg 1190
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 16 to 22
120
Resilience: Unit (Modulus of Resilience), kJ/m3 5.8 to 8.3
320
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
24
Strength to Weight: Axial, points 9.4 to 10
17
Strength to Weight: Bending, points 17 to 18
17
Thermal Diffusivity, mm2/s 92
13
Thermal Shock Resistance, points 4.1 to 4.4
16

Alloy Composition

Aluminum (Al), % 97.9 to 99.95
0
Carbon (C), % 0
0.13 to 0.18
Copper (Cu), % 0 to 0.1
0
Iron (Fe), % 0 to 0.7
96.4 to 97.4
Manganese (Mn), % 0.050 to 0.4
0.45 to 0.65
Molybdenum (Mo), % 0
0.2 to 0.3
Nickel (Ni), % 0
1.7 to 2.0
Phosphorus (P), % 0
0 to 0.035
Silicon (Si), % 0 to 0.4
0.15 to 0.35
Sulfur (S), % 0
0 to 0.040
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0 to 0.15
0