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6261 Aluminum vs. 6063A Aluminum

Both 6261 aluminum and 6063A aluminum are aluminum alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is 6261 aluminum and the bottom bar is 6063A aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 9.0 to 16
6.7 to 18
Fatigue Strength, MPa 60 to 120
53 to 80
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 90 to 180
78 to 150
Tensile Strength: Ultimate (UTS), MPa 150 to 300
130 to 260
Tensile Strength: Yield (Proof), MPa 100 to 260
55 to 200

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 610
620
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 180
200
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 48
49 to 54
Electrical Conductivity: Equal Weight (Specific), % IACS 160
160 to 180

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 27
13 to 21
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 500
22 to 280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 15 to 31
13 to 26
Strength to Weight: Bending, points 23 to 37
21 to 33
Thermal Diffusivity, mm2/s 75
83
Thermal Shock Resistance, points 6.5 to 13
5.6 to 11

Alloy Composition

Aluminum (Al), % 96.6 to 98.6
97.5 to 99
Chromium (Cr), % 0 to 0.1
0 to 0.050
Copper (Cu), % 0.15 to 0.4
0 to 0.1
Iron (Fe), % 0 to 0.4
0.15 to 0.35
Magnesium (Mg), % 0.7 to 1.0
0.6 to 0.9
Manganese (Mn), % 0.2 to 0.35
0 to 0.15
Silicon (Si), % 0.4 to 0.7
0.3 to 0.6
Titanium (Ti), % 0 to 0.1
0 to 0.1
Zinc (Zn), % 0 to 0.2
0 to 0.15
Residuals, % 0
0 to 0.15

Comparable Variants