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6063 Aluminum vs. 6351 Aluminum

Both 6063 aluminum and 6351 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 (2, in this case) are not shown.

For each property being compared, the top bar is 6063 aluminum and the bottom bar is 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 7.3 to 21
7.8 to 18
Fatigue Strength, MPa 39 to 95
79 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 70 to 190
84 to 200
Tensile Strength: Ultimate (UTS), MPa 110 to 300
140 to 310
Tensile Strength: Yield (Proof), MPa 49 to 270
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 650
650
Melting Onset (Solidus), °C 620
570
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 190 to 220
180
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49 to 58
46
Electrical Conductivity: Equal Weight (Specific), % IACS 160 to 190
150

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
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13 to 27
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 18 to 540
65 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 11 to 31
14 to 32
Strength to Weight: Bending, points 18 to 37
22 to 38
Thermal Diffusivity, mm2/s 79 to 89
72
Thermal Shock Resistance, points 4.8 to 13
6.1 to 14

Alloy Composition

Aluminum (Al), % 97.5 to 99.4
96 to 98.5
Chromium (Cr), % 0 to 0.1
0
Copper (Cu), % 0 to 0.1
0 to 0.1
Iron (Fe), % 0 to 0.35
0 to 0.5
Magnesium (Mg), % 0.45 to 0.9
0.4 to 0.8
Manganese (Mn), % 0 to 0.1
0.4 to 0.8
Silicon (Si), % 0.2 to 0.6
0.7 to 1.3
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.1
0 to 0.2
Residuals, % 0
0 to 0.15

Comparable Variants