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6081 Aluminum vs. 6182 Aluminum

Both 6081 aluminum and 6182 aluminum are aluminum alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is 6081 aluminum and the bottom bar is 6182 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
70
Elongation at Break, % 9.0
6.8 to 13
Fatigue Strength, MPa 110
63 to 99
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 180
140 to 190
Tensile Strength: Ultimate (UTS), MPa 310
230 to 320
Tensile Strength: Yield (Proof), MPa 270
130 to 270

Thermal Properties

Latent Heat of Fusion, J/g 410
410
Maximum Temperature: Mechanical, °C 160
190
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 610
600
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
40
Electrical Conductivity: Equal Weight (Specific), % IACS 160
130

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
8.4
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27
21 to 26
Resilience: Unit (Modulus of Resilience), kJ/m3 540
110 to 520
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 32
23 to 32
Strength to Weight: Bending, points 37
30 to 38
Thermal Diffusivity, mm2/s 74
65
Thermal Shock Resistance, points 14
10 to 14

Alloy Composition

Aluminum (Al), % 96.3 to 98.6
95 to 97.9
Chromium (Cr), % 0 to 0.1
0 to 0.25
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 0.6 to 1.0
0.7 to 1.2
Manganese (Mn), % 0.1 to 0.45
0.5 to 1.0
Silicon (Si), % 0.7 to 1.1
0.9 to 1.3
Titanium (Ti), % 0 to 0.15
0 to 0.1
Zinc (Zn), % 0 to 0.2
0 to 0.2
Zirconium (Zr), % 0
0.050 to 0.2
Residuals, % 0
0 to 0.15