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8021 Aluminum vs. 2095 Aluminum

Both 8021 aluminum and 2095 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 (2, in this case) are not shown.

For each property being compared, the top bar is 8021 aluminum and the bottom bar is 2095 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
70
Elongation at Break, % 2.3
8.5
Fatigue Strength, MPa 61
200
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Tensile Strength: Ultimate (UTS), MPa 160
700
Tensile Strength: Yield (Proof), MPa 130
610

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 170
210
Melting Completion (Liquidus), °C 650
660
Melting Onset (Solidus), °C 640
540
Specific Heat Capacity, J/kg-K 900
910
Thermal Conductivity, W/m-K 220
130
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 56
35
Electrical Conductivity: Equal Weight (Specific), % IACS 180
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
31
Density, g/cm3 2.8
3.0
Embodied Carbon, kg CO2/kg material 8.1
8.6
Embodied Energy, MJ/kg 150
160
Embodied Water, L/kg 1180
1470

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.4
57
Resilience: Unit (Modulus of Resilience), kJ/m3 130
2640
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
46
Strength to Weight: Axial, points 16
65
Strength to Weight: Bending, points 23
59
Thermal Diffusivity, mm2/s 88
49
Thermal Shock Resistance, points 7.0
31

Alloy Composition

Aluminum (Al), % 98 to 98.8
91.3 to 94.9
Copper (Cu), % 0 to 0.050
3.9 to 4.6
Iron (Fe), % 1.2 to 1.7
0 to 0.15
Lithium (Li), % 0
0.7 to 1.5
Magnesium (Mg), % 0
0.25 to 0.8
Manganese (Mn), % 0
0 to 0.25
Silicon (Si), % 0 to 0.15
0 to 0.12
Silver (Ag), % 0
0.25 to 0.6
Titanium (Ti), % 0
0 to 0.1
Zinc (Zn), % 0
0 to 0.25
Zirconium (Zr), % 0
0.040 to 0.18
Residuals, % 0
0 to 0.15