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6023 Aluminum vs. 8021 Aluminum

Both 6023 aluminum and 8021 aluminum are aluminum alloys. They have a very high 96% of their average alloy composition in common. There are 29 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 6023 aluminum and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 11
2.3
Fatigue Strength, MPa 120 to 130
61
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Tensile Strength: Ultimate (UTS), MPa 360
160
Tensile Strength: Yield (Proof), MPa 300 to 310
130

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 580
640
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 170
220
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
56
Electrical Conductivity: Equal Weight (Specific), % IACS 140
180

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.0
Density, g/cm3 2.8
2.8
Embodied Carbon, kg CO2/kg material 8.3
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
49
Strength to Weight: Axial, points 35 to 36
16
Strength to Weight: Bending, points 40
23
Thermal Diffusivity, mm2/s 67
88
Thermal Shock Resistance, points 16
7.0

Alloy Composition

Aluminum (Al), % 94 to 97.7
98 to 98.8
Bismuth (Bi), % 0.3 to 0.8
0
Copper (Cu), % 0.2 to 0.5
0 to 0.050
Iron (Fe), % 0 to 0.5
1.2 to 1.7
Magnesium (Mg), % 0.4 to 0.9
0
Manganese (Mn), % 0.2 to 0.6
0
Silicon (Si), % 0.6 to 1.4
0 to 0.15
Tin (Sn), % 0.6 to 1.2
0
Residuals, % 0 to 0.15
0 to 0.15