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2218 Aluminum vs. 707.0 Aluminum

Both 2218 aluminum and 707.0 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 2218 aluminum and the bottom bar is 707.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
70
Elongation at Break, % 6.8 to 10
1.7 to 3.4
Fatigue Strength, MPa 110
75 to 140
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Tensile Strength: Ultimate (UTS), MPa 330 to 430
270 to 300
Tensile Strength: Yield (Proof), MPa 260 to 310
170 to 250

Thermal Properties

Latent Heat of Fusion, J/g 390
380
Maximum Temperature: Mechanical, °C 220
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 510
600
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 140
150
Thermal Expansion, µm/m-K 22
24

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 3.1
2.9
Embodied Carbon, kg CO2/kg material 8.2
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 31
4.3 to 8.6
Resilience: Unit (Modulus of Resilience), kJ/m3 450 to 650
210 to 430
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
47
Strength to Weight: Axial, points 30 to 39
26 to 29
Strength to Weight: Bending, points 34 to 41
32 to 34
Thermal Diffusivity, mm2/s 52
58
Thermal Shock Resistance, points 15 to 19
12 to 13

Alloy Composition

Aluminum (Al), % 88.8 to 93.6
90.5 to 93.6
Chromium (Cr), % 0 to 0.1
0.2 to 0.4
Copper (Cu), % 3.5 to 4.5
0 to 0.2
Iron (Fe), % 0 to 1.0
0 to 0.8
Magnesium (Mg), % 1.2 to 1.8
1.8 to 2.4
Manganese (Mn), % 0 to 0.2
0.4 to 0.6
Nickel (Ni), % 1.7 to 2.3
0
Silicon (Si), % 0 to 0.9
0 to 0.2
Titanium (Ti), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.25
4.0 to 4.5
Residuals, % 0
0 to 0.15