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2618 Aluminum vs. 5051A Aluminum

Both 2618 aluminum and 5051A 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 5051A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
68
Elongation at Break, % 5.8
18 to 21
Fatigue Strength, MPa 110
51 to 61
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 260
110
Tensile Strength: Ultimate (UTS), MPa 420
170
Tensile Strength: Yield (Proof), MPa 350
56

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 210
190
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 550
610
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 160
150
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
39
Electrical Conductivity: Equal Weight (Specific), % IACS 110
130

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 2.9
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.5
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 23
24 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 850
23
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 47
50
Strength to Weight: Axial, points 40
17 to 18
Strength to Weight: Bending, points 42
25
Thermal Diffusivity, mm2/s 62
63
Thermal Shock Resistance, points 19
7.6

Alloy Composition

Aluminum (Al), % 92.4 to 94.9
96.1 to 98.6
Chromium (Cr), % 0
0 to 0.3
Copper (Cu), % 1.9 to 2.7
0 to 0.050
Iron (Fe), % 0.9 to 1.3
0 to 0.45
Magnesium (Mg), % 1.3 to 1.8
1.4 to 2.1
Manganese (Mn), % 0
0 to 0.25
Nickel (Ni), % 0.9 to 1.2
0
Silicon (Si), % 0.1 to 0.25
0 to 0.3
Titanium (Ti), % 0.040 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.1
0 to 0.2
Residuals, % 0
0 to 0.15