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2219 Aluminum vs. 2618A Aluminum

Both 2219 aluminum and 2618A aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is 2219 aluminum and the bottom bar is 2618A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
72
Elongation at Break, % 2.2 to 20
4.5
Fatigue Strength, MPa 90 to 130
120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Shear Strength, MPa 110 to 280
260
Tensile Strength: Ultimate (UTS), MPa 180 to 480
440
Tensile Strength: Yield (Proof), MPa 88 to 390
410

Thermal Properties

Latent Heat of Fusion, J/g 390
390
Maximum Temperature: Mechanical, °C 230
230
Melting Completion (Liquidus), °C 640
670
Melting Onset (Solidus), °C 540
560
Specific Heat Capacity, J/kg-K 870
880
Thermal Conductivity, W/m-K 110 to 170
150
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28 to 44
37
Electrical Conductivity: Equal Weight (Specific), % IACS 81 to 130
110

Otherwise Unclassified Properties

Base Metal Price, % relative 11
11
Density, g/cm3 3.1
3.0
Embodied Carbon, kg CO2/kg material 8.2
8.4
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.6 to 60
19
Resilience: Unit (Modulus of Resilience), kJ/m3 54 to 1060
1180
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 44
47
Strength to Weight: Axial, points 16 to 43
41
Strength to Weight: Bending, points 23 to 44
44
Thermal Diffusivity, mm2/s 42 to 63
59
Thermal Shock Resistance, points 8.2 to 22
19

Alloy Composition

Aluminum (Al), % 91.5 to 93.8
91.5 to 95.2
Copper (Cu), % 5.8 to 6.8
1.8 to 2.7
Iron (Fe), % 0 to 0.3
0.9 to 1.4
Magnesium (Mg), % 0 to 0.020
1.2 to 1.8
Manganese (Mn), % 0.2 to 0.4
0 to 0.25
Nickel (Ni), % 0
0.8 to 1.4
Silicon (Si), % 0 to 0.2
0.15 to 0.25
Titanium (Ti), % 0.020 to 0.1
0 to 0.2
Vanadium (V), % 0.050 to 0.15
0
Zinc (Zn), % 0 to 0.1
0 to 0.15
Zirconium (Zr), % 0.1 to 0.25
0 to 0.25
Residuals, % 0
0 to 0.15