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6063-T42 Aluminum vs. 6066-T42 Aluminum

Both 6063-T42 aluminum and 6066-T42 aluminum are aluminum alloys. Both are furnished in the T42 temper. They have a very high 97% 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 6063-T42 aluminum and the bottom bar is 6066-T42 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 15
13
Fatigue Strength, MPa 39
94
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 99
190
Tensile Strength: Ultimate (UTS), MPa 160
310
Tensile Strength: Yield (Proof), MPa 75
190

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 160
170
Melting Completion (Liquidus), °C 650
650
Melting Onset (Solidus), °C 620
560
Specific Heat Capacity, J/kg-K 900
890
Thermal Conductivity, W/m-K 200
150
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 53
40
Electrical Conductivity: Equal Weight (Specific), % IACS 180
130

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
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 20
36
Resilience: Unit (Modulus of Resilience), kJ/m3 41
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
49
Strength to Weight: Axial, points 17
31
Strength to Weight: Bending, points 24
36
Thermal Diffusivity, mm2/s 82
61
Thermal Shock Resistance, points 7.2
13

Alloy Composition

Aluminum (Al), % 97.5 to 99.4
93 to 97
Chromium (Cr), % 0 to 0.1
0 to 0.4
Copper (Cu), % 0 to 0.1
0.7 to 1.2
Iron (Fe), % 0 to 0.35
0 to 0.5
Magnesium (Mg), % 0.45 to 0.9
0.8 to 1.4
Manganese (Mn), % 0 to 0.1
0.6 to 1.1
Silicon (Si), % 0.2 to 0.6
0.9 to 1.8
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.1
0 to 0.25
Residuals, % 0
0 to 0.15