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6261-T6 Aluminum vs. 7075-T6 Aluminum

Both 6261-T6 aluminum and 7075-T6 aluminum are aluminum alloys. Both are furnished in the T6 temper. They have a moderately high 91% of their average alloy composition in common. There are 30 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 6261-T6 aluminum and the bottom bar is 7075-T6 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 9.0
7.9
Fatigue Strength, MPa 100
160
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 180
330
Tensile Strength: Ultimate (UTS), MPa 300
560
Tensile Strength: Yield (Proof), MPa 260
480

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 160
200
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 610
480
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 180
130
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 48
33
Electrical Conductivity: Equal Weight (Specific), % IACS 160
98

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 8.3
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 26
42
Resilience: Unit (Modulus of Resilience), kJ/m3 500
1630
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
46
Strength to Weight: Axial, points 31
51
Strength to Weight: Bending, points 37
50
Thermal Diffusivity, mm2/s 75
50
Thermal Shock Resistance, points 13
24

Alloy Composition


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Aluminum (Al), % 96.6 to 98.6
86.9 to 91.4
Chromium (Cr), % 0 to 0.1
0.18 to 0.28
Copper (Cu), % 0.15 to 0.4
1.2 to 2.0
Iron (Fe), % 0 to 0.4
0 to 0.5
Magnesium (Mg), % 0.7 to 1.0
2.1 to 2.9
Manganese (Mn), % 0.2 to 0.35
0 to 0.3
Silicon (Si), % 0.4 to 0.7
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.2
5.1 to 6.1
Zirconium (Zr), % 0
0 to 0.25
Residuals, % 0 to 0.15
0 to 0.15