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355.0 Aluminum vs. 8021 Aluminum

Both 355.0 aluminum and 8021 aluminum are aluminum alloys. They have a moderately high 93% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is 355.0 aluminum and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 71
70
Elongation at Break, % 1.5 to 2.6
2.3
Fatigue Strength, MPa 55 to 70
61
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Tensile Strength: Ultimate (UTS), MPa 200 to 260
160
Tensile Strength: Yield (Proof), MPa 150 to 190
130

Thermal Properties

Latent Heat of Fusion, J/g 470
400
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 620
650
Melting Onset (Solidus), °C 560
640
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 150 to 170
220
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 38 to 43
56
Electrical Conductivity: Equal Weight (Specific), % IACS 120 to 140
180

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.7
2.8
Embodied Carbon, kg CO2/kg material 8.0
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1120
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 2.7 to 5.9
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 250
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
49
Strength to Weight: Axial, points 20 to 27
16
Strength to Weight: Bending, points 28 to 33
23
Thermal Diffusivity, mm2/s 60 to 69
88
Thermal Shock Resistance, points 9.1 to 12
7.0

Alloy Composition

Aluminum (Al), % 90.3 to 94.1
98 to 98.8
Chromium (Cr), % 0 to 0.25
0
Copper (Cu), % 1.0 to 1.5
0 to 0.050
Iron (Fe), % 0 to 0.6
1.2 to 1.7
Magnesium (Mg), % 0.4 to 0.6
0
Manganese (Mn), % 0 to 0.5
0
Silicon (Si), % 4.5 to 5.5
0 to 0.15
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0
0 to 0.15