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EN AC-21100 Aluminum vs. 2025 Aluminum

Both EN AC-21100 aluminum and 2025 aluminum are aluminum alloys. They have a very high 98% of their average alloy composition in common. There are 30 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 2025 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 100 to 110
110
Elastic (Young's, Tensile) Modulus, GPa 71
72
Elongation at Break, % 6.2 to 7.3
15
Fatigue Strength, MPa 79 to 87
130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
27
Tensile Strength: Ultimate (UTS), MPa 340 to 350
400
Tensile Strength: Yield (Proof), MPa 210 to 240
260

Thermal Properties

Latent Heat of Fusion, J/g 390
400
Maximum Temperature: Mechanical, °C 170
190
Melting Completion (Liquidus), °C 670
640
Melting Onset (Solidus), °C 550
520
Specific Heat Capacity, J/kg-K 880
870
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 34
40
Electrical Conductivity: Equal Weight (Specific), % IACS 100
120

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 3.0
3.0
Embodied Carbon, kg CO2/kg material 8.0
7.9
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19 to 21
55
Resilience: Unit (Modulus of Resilience), kJ/m3 300 to 400
450
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 46
46
Strength to Weight: Axial, points 31 to 33
37
Strength to Weight: Bending, points 36 to 37
40
Thermal Diffusivity, mm2/s 48
58
Thermal Shock Resistance, points 15
18

Alloy Composition


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Aluminum (Al), % 93.4 to 95.7
90.9 to 95.2
Chromium (Cr), % 0
0 to 0.1
Copper (Cu), % 4.2 to 5.2
3.9 to 5.0
Iron (Fe), % 0 to 0.19
0 to 1.0
Magnesium (Mg), % 0
0 to 0.050
Manganese (Mn), % 0 to 0.55
0.4 to 1.2
Silicon (Si), % 0 to 0.18
0.5 to 1.2
Titanium (Ti), % 0.15 to 0.3
0 to 0.15
Zinc (Zn), % 0 to 0.070
0 to 0.25
Residuals, % 0 to 0.1
0 to 0.15