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6081 Aluminum vs. 355.0 Aluminum

Both 6081 aluminum and 355.0 aluminum are aluminum alloys. They have a moderately high 94% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 6081 aluminum and the bottom bar is 355.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 9.0
1.5 to 2.6
Fatigue Strength, MPa 110
55 to 70
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
27
Shear Strength, MPa 180
150 to 240
Tensile Strength: Ultimate (UTS), MPa 310
200 to 260
Tensile Strength: Yield (Proof), MPa 270
150 to 190

Thermal Properties

Latent Heat of Fusion, J/g 410
470
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 640
620
Melting Onset (Solidus), °C 610
560
Specific Heat Capacity, J/kg-K 900
890
Thermal Conductivity, W/m-K 180
150 to 170
Thermal Expansion, µm/m-K 23
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 47
38 to 43
Electrical Conductivity: Equal Weight (Specific), % IACS 160
120 to 140

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
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1120

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
2.7 to 5.9
Resilience: Unit (Modulus of Resilience), kJ/m3 540
150 to 250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
51
Strength to Weight: Axial, points 32
20 to 27
Strength to Weight: Bending, points 37
28 to 33
Thermal Diffusivity, mm2/s 74
60 to 69
Thermal Shock Resistance, points 14
9.1 to 12

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
90.3 to 94.1
Chromium (Cr), % 0 to 0.1
0 to 0.25
Copper (Cu), % 0 to 0.1
1.0 to 1.5
Iron (Fe), % 0 to 0.5
0 to 0.6
Magnesium (Mg), % 0.6 to 1.0
0.4 to 0.6
Manganese (Mn), % 0.1 to 0.45
0 to 0.5
Silicon (Si), % 0.7 to 1.1
4.5 to 5.5
Titanium (Ti), % 0 to 0.15
0 to 0.25
Zinc (Zn), % 0 to 0.2
0 to 0.35
Residuals, % 0
0 to 0.15