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6023 Aluminum vs. 6351 Aluminum

Both 6023 aluminum and 6351 aluminum are aluminum alloys. They have a very high 98% of their average alloy composition in common.

For each property being compared, the top bar is 6023 aluminum and the bottom bar is 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
69
Elongation at Break, % 11
7.8 to 18
Fatigue Strength, MPa 120 to 130
79 to 130
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 210 to 220
84 to 200
Tensile Strength: Ultimate (UTS), MPa 360
140 to 310
Tensile Strength: Yield (Proof), MPa 300 to 310
95 to 270

Thermal Properties

Latent Heat of Fusion, J/g 400
410
Maximum Temperature: Mechanical, °C 160
160
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 580
570
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 170
180
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
46
Electrical Conductivity: Equal Weight (Specific), % IACS 140
150

Otherwise Unclassified Properties

Base Metal Price, % relative 11
9.5
Density, g/cm3 2.8
2.7
Embodied Carbon, kg CO2/kg material 8.3
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
20 to 38
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
65 to 540
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
50
Strength to Weight: Axial, points 35 to 36
14 to 32
Strength to Weight: Bending, points 40
22 to 38
Thermal Diffusivity, mm2/s 67
72
Thermal Shock Resistance, points 16
6.1 to 14

Alloy Composition


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Aluminum (Al), % 94 to 97.7
96 to 98.5
Bismuth (Bi), % 0.3 to 0.8
0
Copper (Cu), % 0.2 to 0.5
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 0.4 to 0.9
0.4 to 0.8
Manganese (Mn), % 0.2 to 0.6
0.4 to 0.8
Silicon (Si), % 0.6 to 1.4
0.7 to 1.3
Tin (Sn), % 0.6 to 1.2
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0 to 0.15
0 to 0.15

Comparable Variants