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6065-T6 Aluminum vs. 7475-T6 Aluminum

Both 6065-T6 aluminum and 7475-T6 aluminum are aluminum alloys. Both are furnished in the T6 temper. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is 6065-T6 aluminum and the bottom bar is 7475-T6 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 11
10
Fatigue Strength, MPa 110
200
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
26
Shear Strength, MPa 190
350
Tensile Strength: Ultimate (UTS), MPa 310
590
Tensile Strength: Yield (Proof), MPa 270
490

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
480
Specific Heat Capacity, J/kg-K 890
870
Thermal Conductivity, W/m-K 170
140
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
33
Electrical Conductivity: Equal Weight (Specific), % IACS 140
98

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.8
3.0
Embodied Carbon, kg CO2/kg material 8.4
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1200
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 34
57
Resilience: Unit (Modulus of Resilience), kJ/m3 540
1740
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
46
Strength to Weight: Axial, points 31
54
Strength to Weight: Bending, points 36
52
Thermal Diffusivity, mm2/s 67
54
Thermal Shock Resistance, points 14
26

Alloy Composition

Aluminum (Al), % 94.4 to 98.2
88.6 to 91.6
Bismuth (Bi), % 0.5 to 1.5
0
Chromium (Cr), % 0 to 0.15
0.18 to 0.25
Copper (Cu), % 0.15 to 0.4
1.2 to 1.9
Iron (Fe), % 0 to 0.7
0 to 0.12
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.8 to 1.2
1.9 to 2.6
Manganese (Mn), % 0 to 0.15
0 to 0.060
Silicon (Si), % 0.4 to 0.8
0 to 0.1
Titanium (Ti), % 0 to 0.1
0 to 0.060
Zinc (Zn), % 0 to 0.25
5.1 to 6.2
Zirconium (Zr), % 0 to 0.15
0
Residuals, % 0
0 to 0.15