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5251 Aluminum vs. 6012 Aluminum

Both 5251 aluminum and 6012 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 5251 aluminum and the bottom bar is 6012 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 2.0 to 19
9.1 to 11
Fatigue Strength, MPa 59 to 110
55 to 100
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 110 to 160
130 to 190
Tensile Strength: Ultimate (UTS), MPa 180 to 280
220 to 320
Tensile Strength: Yield (Proof), MPa 67 to 250
110 to 260

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 610
570
Specific Heat Capacity, J/kg-K 900
890
Thermal Conductivity, W/m-K 150
160
Thermal Expansion, µm/m-K 24
23

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.5
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
21 to 28
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
94 to 480
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
48
Strength to Weight: Axial, points 18 to 29
22 to 32
Strength to Weight: Bending, points 26 to 35
29 to 37
Thermal Diffusivity, mm2/s 61
62
Thermal Shock Resistance, points 7.9 to 13
10 to 14

Alloy Composition


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Aluminum (Al), % 95.5 to 98.2
92.2 to 98
Bismuth (Bi), % 0
0 to 0.7
Chromium (Cr), % 0 to 0.15
0 to 0.3
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.5
Lead (Pb), % 0
0.4 to 2.0
Magnesium (Mg), % 1.7 to 2.4
0.6 to 1.2
Manganese (Mn), % 0.1 to 0.5
0.4 to 1.0
Silicon (Si), % 0 to 0.4
0.6 to 1.4
Titanium (Ti), % 0 to 0.15
0 to 0.2
Zinc (Zn), % 0 to 0.15
0 to 0.3
Residuals, % 0 to 0.15
0 to 0.15