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6105 Aluminum vs. 2018 Aluminum

Both 6105 aluminum and 2018 aluminum are aluminum alloys. They have a moderately high 94% 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 6105 aluminum and the bottom bar is 2018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
73
Elongation at Break, % 9.0 to 16
9.6
Fatigue Strength, MPa 95 to 130
120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 120 to 170
270
Tensile Strength: Ultimate (UTS), MPa 190 to 280
420
Tensile Strength: Yield (Proof), MPa 120 to 270
310

Thermal Properties

Latent Heat of Fusion, J/g 410
390
Maximum Temperature: Mechanical, °C 160
220
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 600
510
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 180 to 190
150
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46 to 50
40
Electrical Conductivity: Equal Weight (Specific), % IACS 150 to 170
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 25 to 27
37
Resilience: Unit (Modulus of Resilience), kJ/m3 100 to 550
670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
45
Strength to Weight: Axial, points 20 to 29
38
Strength to Weight: Bending, points 28 to 35
41
Thermal Diffusivity, mm2/s 72 to 79
57
Thermal Shock Resistance, points 8.6 to 12
19

Alloy Composition

Aluminum (Al), % 97.2 to 99
89.7 to 94.4
Chromium (Cr), % 0 to 0.1
0 to 0.1
Copper (Cu), % 0 to 0.1
3.5 to 4.5
Iron (Fe), % 0 to 0.35
0 to 1.0
Magnesium (Mg), % 0.45 to 0.8
0.45 to 0.9
Manganese (Mn), % 0 to 0.1
0 to 0.2
Nickel (Ni), % 0
1.7 to 2.3
Silicon (Si), % 0.6 to 1.0
0 to 0.9
Titanium (Ti), % 0 to 0.1
0
Zinc (Zn), % 0 to 0.1
0 to 0.25
Residuals, % 0
0 to 0.15