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6351 Aluminum vs. 7022 Aluminum

Both 6351 aluminum and 7022 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is 6351 aluminum and the bottom bar is 7022 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 7.8 to 18
6.3 to 8.0
Fatigue Strength, MPa 79 to 130
140 to 170
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 84 to 200
290 to 320
Tensile Strength: Ultimate (UTS), MPa 140 to 310
490 to 540
Tensile Strength: Yield (Proof), MPa 95 to 270
390 to 460

Thermal Properties

Latent Heat of Fusion, J/g 410
380
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 570
480
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 180
140
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 46
21
Electrical Conductivity: Equal Weight (Specific), % IACS 150
65

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.3
8.5
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20 to 38
29 to 40
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 540
1100 to 1500
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
47
Strength to Weight: Axial, points 14 to 32
47 to 51
Strength to Weight: Bending, points 22 to 38
47 to 50
Thermal Diffusivity, mm2/s 72
54
Thermal Shock Resistance, points 6.1 to 14
21 to 23

Alloy Composition

Aluminum (Al), % 96 to 98.5
87.9 to 92.4
Chromium (Cr), % 0
0.1 to 0.3
Copper (Cu), % 0 to 0.1
0.5 to 1.0
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 0.4 to 0.8
2.6 to 3.7
Manganese (Mn), % 0.4 to 0.8
0.1 to 0.4
Silicon (Si), % 0.7 to 1.3
0 to 0.5
Titanium (Ti), % 0 to 0.2
0 to 0.2
Zinc (Zn), % 0 to 0.2
4.3 to 5.2
Zirconium (Zr), % 0
0 to 0.2
Residuals, % 0
0 to 0.15

Comparable Variants