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356.0 Aluminum vs. 8021 Aluminum

Both 356.0 aluminum and 8021 aluminum are aluminum alloys. They have a moderately high 92% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is 356.0 aluminum and the bottom bar is 8021 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 2.0 to 3.8
2.3
Fatigue Strength, MPa 55 to 75
61
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Tensile Strength: Ultimate (UTS), MPa 160 to 240
160
Tensile Strength: Yield (Proof), MPa 100 to 190
130

Thermal Properties

Latent Heat of Fusion, J/g 500
400
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 620
650
Melting Onset (Solidus), °C 570
640
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 150 to 170
220
Thermal Expansion, µm/m-K 21
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 43
56
Electrical Conductivity: Equal Weight (Specific), % IACS 140 to 150
180

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.6
2.8
Embodied Carbon, kg CO2/kg material 8.0
8.1
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1110
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.2 to 8.2
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 70 to 250
130
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 53
49
Strength to Weight: Axial, points 17 to 26
16
Strength to Weight: Bending, points 25 to 33
23
Thermal Diffusivity, mm2/s 64 to 71
88
Thermal Shock Resistance, points 7.6 to 11
7.0

Alloy Composition

Aluminum (Al), % 90.1 to 93.3
98 to 98.8
Copper (Cu), % 0 to 0.25
0 to 0.050
Iron (Fe), % 0 to 0.6
1.2 to 1.7
Magnesium (Mg), % 0.2 to 0.45
0
Manganese (Mn), % 0 to 0.35
0
Silicon (Si), % 6.5 to 7.5
0 to 0.15
Titanium (Ti), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.35
0
Residuals, % 0
0 to 0.15