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2618 Aluminum vs. 6018 Aluminum

Both 2618 aluminum and 6018 aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 2618 aluminum and the bottom bar is 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
69
Elongation at Break, % 5.8
9.0 to 9.1
Fatigue Strength, MPa 110
85 to 89
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 260
170 to 180
Tensile Strength: Ultimate (UTS), MPa 420
290 to 300
Tensile Strength: Yield (Proof), MPa 350
220 to 230

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 210
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 550
570
Specific Heat Capacity, J/kg-K 880
890
Thermal Conductivity, W/m-K 160
170
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
44
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.9
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
24 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 850
360 to 380
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
48
Strength to Weight: Axial, points 40
28 to 29
Strength to Weight: Bending, points 42
34 to 35
Thermal Diffusivity, mm2/s 62
65
Thermal Shock Resistance, points 19
13

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
93.1 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 1.9 to 2.7
0.15 to 0.4
Iron (Fe), % 0.9 to 1.3
0 to 0.7
Lead (Pb), % 0
0.4 to 1.2
Magnesium (Mg), % 1.3 to 1.8
0.6 to 1.2
Manganese (Mn), % 0
0.3 to 0.8
Nickel (Ni), % 0.9 to 1.2
0
Silicon (Si), % 0.1 to 0.25
0.5 to 1.2
Titanium (Ti), % 0.040 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.1
0 to 0.3
Residuals, % 0
0 to 0.15