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EN AC-42100 Aluminum vs. 2124 Aluminum

Both EN AC-42100 aluminum and 2124 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 EN AC-42100 aluminum and the bottom bar is 2124 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
71
Elongation at Break, % 3.4 to 9.0
5.7
Fatigue Strength, MPa 76 to 82
130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Tensile Strength: Ultimate (UTS), MPa 280 to 290
490
Tensile Strength: Yield (Proof), MPa 210 to 230
430

Thermal Properties

Latent Heat of Fusion, J/g 500
390
Maximum Temperature: Mechanical, °C 170
190
Melting Completion (Liquidus), °C 610
640
Melting Onset (Solidus), °C 600
500
Specific Heat Capacity, J/kg-K 910
880
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 22
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 41
38
Electrical Conductivity: Equal Weight (Specific), % IACS 140
110

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.6
3.0
Embodied Carbon, kg CO2/kg material 8.0
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1110
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 9.1 to 23
27
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 370
1290
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 53
46
Strength to Weight: Axial, points 30 to 31
45
Strength to Weight: Bending, points 37 to 38
46
Thermal Diffusivity, mm2/s 66
58
Thermal Shock Resistance, points 13
21

Alloy Composition

Aluminum (Al), % 91.3 to 93.3
91.3 to 94.7
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 0 to 0.050
3.8 to 4.9
Iron (Fe), % 0 to 0.19
0 to 0.3
Magnesium (Mg), % 0.25 to 0.45
1.2 to 1.8
Manganese (Mn), % 0 to 0.1
0.3 to 0.9
Silicon (Si), % 6.5 to 7.5
0 to 0.2
Titanium (Ti), % 0 to 0.25
0 to 0.15
Zinc (Zn), % 0 to 0.070
0 to 0.25
Residuals, % 0
0 to 0.15