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1070A Aluminum vs. 2618 Aluminum

Both 1070A aluminum and 2618 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is 1070A aluminum and the bottom bar is 2618 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 18 to 40
120
Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 2.3 to 33
5.8
Fatigue Strength, MPa 17 to 51
110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 44 to 81
260
Tensile Strength: Ultimate (UTS), MPa 68 to 140
420
Tensile Strength: Yield (Proof), MPa 17 to 120
350

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 170
210
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 640
550
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 230
160
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 60
37
Electrical Conductivity: Equal Weight (Specific), % IACS 200
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.2
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1200
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.0 to 18
23
Resilience: Unit (Modulus of Resilience), kJ/m3 2.1 to 100
850
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 7.0 to 14
40
Strength to Weight: Bending, points 14 to 22
42
Thermal Diffusivity, mm2/s 94
62
Thermal Shock Resistance, points 3.1 to 6.3
19

Alloy Composition


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Aluminum (Al), % 99.7 to 100
92.4 to 94.9
Copper (Cu), % 0 to 0.030
1.9 to 2.7
Iron (Fe), % 0 to 0.25
0.9 to 1.3
Magnesium (Mg), % 0 to 0.030
1.3 to 1.8
Manganese (Mn), % 0 to 0.030
0
Nickel (Ni), % 0
0.9 to 1.2
Silicon (Si), % 0 to 0.2
0.1 to 0.25
Titanium (Ti), % 0 to 0.030
0.040 to 0.1
Zinc (Zn), % 0 to 0.070
0 to 0.1
Residuals, % 0
0 to 0.15