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5021 Aluminum vs. 6061 Aluminum

Both 5021 aluminum and 6061 aluminum are aluminum alloys. They have a very high 98% 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 5021 aluminum and the bottom bar is 6061 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 1.1 to 3.4
3.4 to 20
Fatigue Strength, MPa 85 to 110
58 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
84 to 210
Tensile Strength: Ultimate (UTS), MPa 300 to 310
130 to 410
Tensile Strength: Yield (Proof), MPa 240 to 270
76 to 370

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 590
580
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 140
170
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
43
Electrical Conductivity: Equal Weight (Specific), % IACS 120
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.6
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
3.8 to 81
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
42 to 1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 30 to 32
13 to 42
Strength to Weight: Bending, points 37
21 to 45
Thermal Diffusivity, mm2/s 57
68
Thermal Shock Resistance, points 13 to 14
5.7 to 18

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
95.9 to 98.6
Chromium (Cr), % 0 to 0.15
0.040 to 0.35
Copper (Cu), % 0 to 0.15
0.15 to 0.4
Iron (Fe), % 0 to 0.5
0 to 0.7
Magnesium (Mg), % 2.2 to 2.8
0.8 to 1.2
Manganese (Mn), % 0.1 to 0.5
0 to 0.15
Silicon (Si), % 0 to 0.4
0.4 to 0.8
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0 to 0.15
0 to 0.25
Residuals, % 0
0 to 0.15