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6081 Aluminum vs. 3103 Aluminum

Both 6081 aluminum and 3103 aluminum are aluminum alloys. They have a very high 99% 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 6081 aluminum and the bottom bar is 3103 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 9.0
1.1 to 28
Fatigue Strength, MPa 110
38 to 83
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 180
68 to 130
Tensile Strength: Ultimate (UTS), MPa 310
100 to 220
Tensile Strength: Yield (Proof), MPa 270
39 to 200

Thermal Properties

Latent Heat of Fusion, J/g 410
400
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 640
660
Melting Onset (Solidus), °C 610
640
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 180
160
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
42
Electrical Conductivity: Equal Weight (Specific), % IACS 160
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.8
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 27
2.4 to 24
Resilience: Unit (Modulus of Resilience), kJ/m3 540
11 to 280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 32
10 to 22
Strength to Weight: Bending, points 37
18 to 30
Thermal Diffusivity, mm2/s 74
64
Thermal Shock Resistance, points 14
4.6 to 9.9

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
96.3 to 99.1
Chromium (Cr), % 0 to 0.1
0 to 0.1
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.7
Magnesium (Mg), % 0.6 to 1.0
0 to 0.3
Manganese (Mn), % 0.1 to 0.45
0.9 to 1.5
Silicon (Si), % 0.7 to 1.1
0 to 0.5
Titanium (Ti), % 0 to 0.15
0 to 0.1
Zinc (Zn), % 0 to 0.2
0 to 0.2
Zirconium (Zr), % 0
0 to 0.1
Residuals, % 0
0 to 0.15