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6360 Aluminum vs. 7021 Aluminum

Both 6360 aluminum and 7021 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is 6360 aluminum and the bottom bar is 7021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 9.0 to 18
9.4
Fatigue Strength, MPa 31 to 67
150
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 76 to 130
270
Tensile Strength: Ultimate (UTS), MPa 120 to 220
460
Tensile Strength: Yield (Proof), MPa 57 to 170
390

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 630
510
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 210
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 54
38
Electrical Conductivity: Equal Weight (Specific), % IACS 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 8.3
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 14 to 19
41
Resilience: Unit (Modulus of Resilience), kJ/m3 24 to 210
1110
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 13 to 23
44
Strength to Weight: Bending, points 20 to 30
45
Thermal Diffusivity, mm2/s 86
59
Thermal Shock Resistance, points 5.5 to 9.9
20

Alloy Composition

Aluminum (Al), % 97.8 to 99.3
90.7 to 93.7
Chromium (Cr), % 0 to 0.050
0 to 0.050
Copper (Cu), % 0 to 0.15
0 to 0.25
Iron (Fe), % 0.1 to 0.3
0 to 0.4
Magnesium (Mg), % 0.25 to 0.45
1.2 to 1.8
Manganese (Mn), % 0.020 to 0.15
0 to 0.1
Silicon (Si), % 0.35 to 0.8
0 to 0.25
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.1
5.0 to 6.0
Zirconium (Zr), % 0
0.080 to 0.18
Residuals, % 0
0 to 0.15