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5021 Aluminum vs. 6101B Aluminum

Both 5021 aluminum and 6101B aluminum are aluminum alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is 5021 aluminum and the bottom bar is 6101B aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
68
Elongation at Break, % 1.1 to 3.4
9.1 to 13
Fatigue Strength, MPa 85 to 110
62 to 70
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 170
120 to 150
Tensile Strength: Ultimate (UTS), MPa 300 to 310
190 to 250
Tensile Strength: Yield (Proof), MPa 240 to 270
140 to 180

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
630
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 140
210
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
57
Electrical Conductivity: Equal Weight (Specific), % IACS 120
190

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
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.1 to 10
20 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 440 to 550
140 to 240
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 30 to 32
20 to 25
Strength to Weight: Bending, points 37
27 to 32
Thermal Diffusivity, mm2/s 57
87
Thermal Shock Resistance, points 13 to 14
8.5 to 11

Alloy Composition

Aluminum (Al), % 95.2 to 97.7
98.2 to 99.3
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0 to 0.050
Iron (Fe), % 0 to 0.5
0.1 to 0.3
Magnesium (Mg), % 2.2 to 2.8
0.35 to 0.6
Manganese (Mn), % 0.1 to 0.5
0 to 0.050
Silicon (Si), % 0 to 0.4
0.3 to 0.6
Zinc (Zn), % 0 to 0.15
0 to 0.1
Residuals, % 0
0 to 0.1