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2018 Aluminum vs. 6151 Aluminum

Both 2018 aluminum and 6151 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 2018 aluminum and the bottom bar is 6151 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
69
Elongation at Break, % 9.6
1.1 to 5.7
Fatigue Strength, MPa 120
80 to 100
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 270
190 to 200
Tensile Strength: Ultimate (UTS), MPa 420
330 to 340
Tensile Strength: Yield (Proof), MPa 310
270 to 280

Thermal Properties

Latent Heat of Fusion, J/g 390
410
Maximum Temperature: Mechanical, °C 220
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 510
590
Specific Heat Capacity, J/kg-K 870
900
Thermal Conductivity, W/m-K 150
170
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
45
Electrical Conductivity: Equal Weight (Specific), % IACS 120
150

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 3.1
2.7
Embodied Carbon, kg CO2/kg material 8.1
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 37
3.5 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 670
520 to 580
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
50
Strength to Weight: Axial, points 38
34
Strength to Weight: Bending, points 41
39
Thermal Diffusivity, mm2/s 57
70
Thermal Shock Resistance, points 19
15

Alloy Composition


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Aluminum (Al), % 89.7 to 94.4
95.6 to 98.8
Chromium (Cr), % 0 to 0.1
0.15 to 0.35
Copper (Cu), % 3.5 to 4.5
0 to 0.35
Iron (Fe), % 0 to 1.0
0 to 1.0
Magnesium (Mg), % 0.45 to 0.9
0.45 to 0.8
Manganese (Mn), % 0 to 0.2
0 to 0.2
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0.6 to 1.2
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.25
0 to 0.25
Residuals, % 0 to 0.15
0 to 0.15