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2618A Aluminum vs. SAE-AISI 1008 Steel

2618A aluminum belongs to the aluminum alloys classification, while SAE-AISI 1008 steel belongs to the iron alloys. There are 30 material properties with values for both materials. Properties with values for just one material (2, 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 2618A aluminum and the bottom bar is SAE-AISI 1008 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
190
Elongation at Break, % 4.5
22 to 33
Fatigue Strength, MPa 120
150 to 220
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 27
73
Shear Strength, MPa 260
220 to 230
Tensile Strength: Ultimate (UTS), MPa 440
330 to 370
Tensile Strength: Yield (Proof), MPa 410
190 to 310

Thermal Properties

Latent Heat of Fusion, J/g 390
250
Maximum Temperature: Mechanical, °C 230
400
Melting Completion (Liquidus), °C 670
1470
Melting Onset (Solidus), °C 560
1430
Specific Heat Capacity, J/kg-K 880
470
Thermal Conductivity, W/m-K 150
62
Thermal Expansion, µm/m-K 23
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
6.9
Electrical Conductivity: Equal Weight (Specific), % IACS 110
7.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
1.8
Density, g/cm3 3.0
7.9
Embodied Carbon, kg CO2/kg material 8.4
1.4
Embodied Energy, MJ/kg 150
18
Embodied Water, L/kg 1150
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
78 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 1180
92 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
24
Strength to Weight: Axial, points 41
12 to 13
Strength to Weight: Bending, points 44
13 to 15
Thermal Diffusivity, mm2/s 59
17
Thermal Shock Resistance, points 19
10 to 12

Alloy Composition

Aluminum (Al), % 91.5 to 95.2
0
Carbon (C), % 0
0 to 0.1
Copper (Cu), % 1.8 to 2.7
0
Iron (Fe), % 0.9 to 1.4
99.31 to 99.7
Magnesium (Mg), % 1.2 to 1.8
0
Manganese (Mn), % 0 to 0.25
0.3 to 0.5
Nickel (Ni), % 0.8 to 1.4
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.15 to 0.25
0
Sulfur (S), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.2
0
Zinc (Zn), % 0 to 0.15
0
Zirconium (Zr), % 0 to 0.25
0
Residuals, % 0 to 0.15
0