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2025 Aluminum vs. 6066 Aluminum

Both 2025 aluminum and 6066 aluminum are aluminum alloys. They have a very high 96% 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 2025 aluminum and the bottom bar is 6066 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 72
70
Elongation at Break, % 15
7.8 to 17
Fatigue Strength, MPa 130
94 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 27
26
Shear Strength, MPa 240
95 to 240
Tensile Strength: Ultimate (UTS), MPa 400
160 to 400
Tensile Strength: Yield (Proof), MPa 260
93 to 360

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 190
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 520
560
Specific Heat Capacity, J/kg-K 870
890
Thermal Conductivity, W/m-K 150
150
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40
40
Electrical Conductivity: Equal Weight (Specific), % IACS 120
130

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 3.0
2.8
Embodied Carbon, kg CO2/kg material 7.9
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1130
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 55
23 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 450
61 to 920
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 46
49
Strength to Weight: Axial, points 37
16 to 39
Strength to Weight: Bending, points 40
23 to 43
Thermal Diffusivity, mm2/s 58
61
Thermal Shock Resistance, points 18
6.9 to 17

Alloy Composition

Aluminum (Al), % 90.9 to 95.2
93 to 97
Chromium (Cr), % 0 to 0.1
0 to 0.4
Copper (Cu), % 3.9 to 5.0
0.7 to 1.2
Iron (Fe), % 0 to 1.0
0 to 0.5
Magnesium (Mg), % 0 to 0.050
0.8 to 1.4
Manganese (Mn), % 0.4 to 1.2
0.6 to 1.1
Silicon (Si), % 0.5 to 1.2
0.9 to 1.8
Titanium (Ti), % 0 to 0.15
0 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.25
Residuals, % 0
0 to 0.15