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6261 Aluminum vs. 4045 Aluminum

Both 6261 aluminum and 4045 aluminum are aluminum alloys. They have a moderately high 90% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is 6261 aluminum and the bottom bar is 4045 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 9.0 to 16
2.3
Fatigue Strength, MPa 60 to 120
45
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 90 to 180
69
Tensile Strength: Ultimate (UTS), MPa 150 to 300
120
Tensile Strength: Yield (Proof), MPa 100 to 260
64

Thermal Properties

Latent Heat of Fusion, J/g 400
540
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
600
Melting Onset (Solidus), °C 610
580
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 180
170
Thermal Expansion, µm/m-K 23
21

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.6
Embodied Carbon, kg CO2/kg material 8.3
7.8
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1070

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 21 to 27
2.4
Resilience: Unit (Modulus of Resilience), kJ/m3 77 to 500
29
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 50
54
Strength to Weight: Axial, points 15 to 31
13
Strength to Weight: Bending, points 23 to 37
21
Thermal Diffusivity, mm2/s 75
74
Thermal Shock Resistance, points 6.5 to 13
5.7

Alloy Composition

Aluminum (Al), % 96.6 to 98.6
87.4 to 91
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0.15 to 0.4
0 to 0.3
Iron (Fe), % 0 to 0.4
0 to 0.8
Magnesium (Mg), % 0.7 to 1.0
0 to 0.050
Manganese (Mn), % 0.2 to 0.35
0 to 0.050
Silicon (Si), % 0.4 to 0.7
9.0 to 11
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.2
0 to 0.1
Residuals, % 0
0 to 0.15