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EN AC-21100 Aluminum vs. 8021 Aluminum

Both EN AC-21100 aluminum and 8021 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 (1, in this case) are not shown.

For each property being compared, the top bar is EN AC-21100 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, % 6.2 to 7.3
2.3
Fatigue Strength, MPa 79 to 87
61
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Tensile Strength: Ultimate (UTS), MPa 340 to 350
160
Tensile Strength: Yield (Proof), MPa 210 to 240
130

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 170
170
Melting Completion (Liquidus), °C 670
650
Melting Onset (Solidus), °C 550
640
Specific Heat Capacity, J/kg-K 880
900
Thermal Conductivity, W/m-K 130
220
Thermal Expansion, µm/m-K 23
23

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
3.4
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
130
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
49
Strength to Weight: Axial, points 31 to 33
16
Strength to Weight: Bending, points 36 to 37
23
Thermal Diffusivity, mm2/s 48
88
Thermal Shock Resistance, points 15
7.0

Alloy Composition

Aluminum (Al), % 93.4 to 95.7
98 to 98.8
Copper (Cu), % 4.2 to 5.2
0 to 0.050
Iron (Fe), % 0 to 0.19
1.2 to 1.7
Manganese (Mn), % 0 to 0.55
0
Silicon (Si), % 0 to 0.18
0 to 0.15
Titanium (Ti), % 0.15 to 0.3
0
Zinc (Zn), % 0 to 0.070
0
Residuals, % 0
0 to 0.15