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6061-T42 Aluminum vs. 6063-T42 Aluminum

Both 6061-T42 aluminum and 6063-T42 aluminum are aluminum alloys. Both are furnished in the T42 temper. They have a very high 99% of their average alloy composition in common. There are 31 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 6061-T42 aluminum and the bottom bar is 6063-T42 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 18
15
Fatigue Strength, MPa 58
39
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 140
99
Tensile Strength: Ultimate (UTS), MPa 230
160
Tensile Strength: Yield (Proof), MPa 110
75

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 170
160
Melting Completion (Liquidus), °C 650
650
Melting Onset (Solidus), °C 580
620
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 170
200
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 43
53
Electrical Conductivity: Equal Weight (Specific), % IACS 140
180

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Calomel Potential, mV -740
-740
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 33
20
Resilience: Unit (Modulus of Resilience), kJ/m3 82
41
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 23
17
Strength to Weight: Bending, points 30
24
Thermal Diffusivity, mm2/s 68
82
Thermal Shock Resistance, points 10
7.2

Alloy Composition


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Aluminum (Al), % 95.9 to 98.6
97.5 to 99.4
Chromium (Cr), % 0.040 to 0.35
0 to 0.1
Copper (Cu), % 0.15 to 0.4
0 to 0.1
Iron (Fe), % 0 to 0.7
0 to 0.35
Magnesium (Mg), % 0.8 to 1.2
0.45 to 0.9
Manganese (Mn), % 0 to 0.15
0 to 0.1
Silicon (Si), % 0.4 to 0.8
0.2 to 0.6
Titanium (Ti), % 0 to 0.15
0 to 0.1
Zinc (Zn), % 0 to 0.25
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.15