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6008 Aluminum vs. 5021 Aluminum

Both 6008 aluminum and 5021 aluminum are aluminum alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is 6008 aluminum and the bottom bar is 5021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 9.1 to 17
1.1 to 3.4
Fatigue Strength, MPa 55 to 88
85 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 120 to 170
170
Tensile Strength: Ultimate (UTS), MPa 200 to 290
300 to 310
Tensile Strength: Yield (Proof), MPa 100 to 220
240 to 270

Thermal Properties

Latent Heat of Fusion, J/g 410
400
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 620
590
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 190
140
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
35
Electrical Conductivity: Equal Weight (Specific), % IACS 160
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.5
8.6
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 28
3.1 to 10
Resilience: Unit (Modulus of Resilience), kJ/m3 76 to 360
440 to 550
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 21 to 29
30 to 32
Strength to Weight: Bending, points 28 to 35
37
Thermal Diffusivity, mm2/s 77
57
Thermal Shock Resistance, points 9.0 to 13
13 to 14

Alloy Composition

Aluminum (Al), % 96.5 to 99.1
95.2 to 97.7
Chromium (Cr), % 0 to 0.3
0 to 0.15
Copper (Cu), % 0 to 0.3
0 to 0.15
Iron (Fe), % 0 to 0.35
0 to 0.5
Magnesium (Mg), % 0.4 to 0.7
2.2 to 2.8
Manganese (Mn), % 0 to 0.3
0.1 to 0.5
Silicon (Si), % 0.5 to 0.9
0 to 0.4
Titanium (Ti), % 0 to 0.1
0
Vanadium (V), % 0.050 to 0.2
0
Zinc (Zn), % 0 to 0.2
0 to 0.15
Residuals, % 0
0 to 0.15