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6016 Aluminum vs. 7021 Aluminum

Both 6016 aluminum and 7021 aluminum are aluminum alloys. They have a moderately high 93% 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 6016 aluminum and the bottom bar is 7021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 11 to 27
9.4
Fatigue Strength, MPa 68 to 89
150
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 130 to 170
270
Tensile Strength: Ultimate (UTS), MPa 200 to 280
460
Tensile Strength: Yield (Proof), MPa 110 to 210
390

Thermal Properties

Latent Heat of Fusion, J/g 410
380
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 660
630
Melting Onset (Solidus), °C 610
510
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 190 to 210
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 48 to 54
38
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 180
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
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 1180
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 29 to 47
41
Resilience: Unit (Modulus of Resilience), kJ/m3 82 to 340
1110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
47
Strength to Weight: Axial, points 21 to 29
44
Strength to Weight: Bending, points 29 to 35
45
Thermal Diffusivity, mm2/s 77 to 86
59
Thermal Shock Resistance, points 9.1 to 12
20

Alloy Composition

Aluminum (Al), % 96.4 to 98.8
90.7 to 93.7
Chromium (Cr), % 0 to 0.1
0 to 0.050
Copper (Cu), % 0 to 0.2
0 to 0.25
Iron (Fe), % 0 to 0.5
0 to 0.4
Magnesium (Mg), % 0.25 to 0.6
1.2 to 1.8
Manganese (Mn), % 0 to 0.2
0 to 0.1
Silicon (Si), % 1.0 to 1.5
0 to 0.25
Titanium (Ti), % 0 to 0.15
0 to 0.1
Zinc (Zn), % 0 to 0.2
5.0 to 6.0
Zirconium (Zr), % 0
0.080 to 0.18
Residuals, % 0 to 0.15
0 to 0.15