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8021 Aluminum vs. 204.0 Aluminum

Both 8021 aluminum and 204.0 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 8021 aluminum and the bottom bar is 204.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
71
Elongation at Break, % 2.3
5.7 to 7.8
Fatigue Strength, MPa 61
63 to 77
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Tensile Strength: Ultimate (UTS), MPa 160
230 to 340
Tensile Strength: Yield (Proof), MPa 130
180 to 220

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 650
650
Melting Onset (Solidus), °C 640
580
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 220
120
Thermal Expansion, µm/m-K 23
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
29 to 34
Electrical Conductivity: Equal Weight (Specific), % IACS 180
87 to 100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
11
Density, g/cm3 2.8
3.0
Embodied Carbon, kg CO2/kg material 8.1
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4
12 to 23
Resilience: Unit (Modulus of Resilience), kJ/m3 130
220 to 350
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
46
Strength to Weight: Axial, points 16
21 to 31
Strength to Weight: Bending, points 23
28 to 36
Thermal Diffusivity, mm2/s 88
46
Thermal Shock Resistance, points 7.0
12 to 18

Alloy Composition

Aluminum (Al), % 98 to 98.8
93.4 to 95.5
Copper (Cu), % 0 to 0.050
4.2 to 5.0
Iron (Fe), % 1.2 to 1.7
0 to 0.35
Magnesium (Mg), % 0
0.15 to 0.35
Manganese (Mn), % 0
0 to 0.1
Nickel (Ni), % 0
0 to 0.050
Silicon (Si), % 0 to 0.15
0 to 0.2
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0
0.15 to 0.3
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15