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6023 Aluminum vs. 5251 Aluminum

Both 6023 aluminum and 5251 aluminum are aluminum alloys. 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 6023 aluminum and the bottom bar is 5251 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
68
Elongation at Break, % 11
2.0 to 19
Fatigue Strength, MPa 120 to 130
59 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 210 to 220
110 to 160
Tensile Strength: Ultimate (UTS), MPa 360
180 to 280
Tensile Strength: Yield (Proof), MPa 300 to 310
67 to 250

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 580
610
Specific Heat Capacity, J/kg-K 890
900
Thermal Conductivity, W/m-K 170
150
Thermal Expansion, µm/m-K 23
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
37
Electrical Conductivity: Equal Weight (Specific), % IACS 140
120

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
8.5
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 38 to 39
5.4 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 670 to 690
33 to 450
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 49
50
Strength to Weight: Axial, points 35 to 36
18 to 29
Strength to Weight: Bending, points 40
26 to 35
Thermal Diffusivity, mm2/s 67
61
Thermal Shock Resistance, points 16
7.9 to 13

Alloy Composition

Aluminum (Al), % 94 to 97.7
95.5 to 98.2
Bismuth (Bi), % 0.3 to 0.8
0
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0.2 to 0.5
0 to 0.15
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 0.4 to 0.9
1.7 to 2.4
Manganese (Mn), % 0.2 to 0.6
0.1 to 0.5
Silicon (Si), % 0.6 to 1.4
0 to 0.4
Tin (Sn), % 0.6 to 1.2
0
Titanium (Ti), % 0
0 to 0.15
Zinc (Zn), % 0
0 to 0.15
Residuals, % 0
0 to 0.15