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6261 Aluminum vs. 6151 Aluminum

Both 6261 aluminum and 6151 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 6151 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 9.0 to 16
1.1 to 5.7
Fatigue Strength, MPa 60 to 120
80 to 100
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 90 to 180
190 to 200
Tensile Strength: Ultimate (UTS), MPa 150 to 300
330 to 340
Tensile Strength: Yield (Proof), MPa 100 to 260
270 to 280

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 610
590
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 180
170
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 48
45
Electrical Conductivity: Equal Weight (Specific), % IACS 160
150

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
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 27
3.5 to 18
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 500
520 to 580
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 15 to 31
34
Strength to Weight: Bending, points 23 to 37
39
Thermal Diffusivity, mm2/s 75
70
Thermal Shock Resistance, points 6.5 to 13
15

Alloy Composition

Aluminum (Al), % 96.6 to 98.6
95.6 to 98.8
Chromium (Cr), % 0 to 0.1
0.15 to 0.35
Copper (Cu), % 0.15 to 0.4
0 to 0.35
Iron (Fe), % 0 to 0.4
0 to 1.0
Magnesium (Mg), % 0.7 to 1.0
0.45 to 0.8
Manganese (Mn), % 0.2 to 0.35
0 to 0.2
Silicon (Si), % 0.4 to 0.7
0.6 to 1.2
Titanium (Ti), % 0 to 0.1
0 to 0.15
Zinc (Zn), % 0 to 0.2
0 to 0.25
Residuals, % 0
0 to 0.15

Comparable Variants