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6065 Aluminum vs. 6261 Aluminum

Both 6065 aluminum and 6261 aluminum are aluminum alloys. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is 6065 aluminum and the bottom bar is 6261 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 4.5 to 11
9.0 to 16
Fatigue Strength, MPa 96 to 110
60 to 120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 190 to 230
90 to 180
Tensile Strength: Ultimate (UTS), MPa 310 to 400
150 to 300
Tensile Strength: Yield (Proof), MPa 270 to 380
100 to 260

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 590
610
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 170
180
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
48
Electrical Conductivity: Equal Weight (Specific), % IACS 140
160

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 2.8
2.7
Embodied Carbon, kg CO2/kg material 8.4
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1200
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 34
21 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 1040
77 to 500
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
50
Strength to Weight: Axial, points 31 to 40
15 to 31
Strength to Weight: Bending, points 36 to 43
23 to 37
Thermal Diffusivity, mm2/s 67
75
Thermal Shock Resistance, points 14 to 18
6.5 to 13

Alloy Composition

Aluminum (Al), % 94.4 to 98.2
96.6 to 98.6
Bismuth (Bi), % 0.5 to 1.5
0
Chromium (Cr), % 0 to 0.15
0 to 0.1
Copper (Cu), % 0.15 to 0.4
0.15 to 0.4
Iron (Fe), % 0 to 0.7
0 to 0.4
Lead (Pb), % 0 to 0.050
0
Magnesium (Mg), % 0.8 to 1.2
0.7 to 1.0
Manganese (Mn), % 0 to 0.15
0.2 to 0.35
Silicon (Si), % 0.4 to 0.8
0.4 to 0.7
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.25
0 to 0.2
Zirconium (Zr), % 0 to 0.15
0
Residuals, % 0
0 to 0.15

Comparable Variants