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5251 Aluminum vs. 5456 Aluminum

Both 5251 aluminum and 5456 aluminum are aluminum alloys. They have a very high 96% 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 5251 aluminum and the bottom bar is 5456 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
68
Elongation at Break, % 2.0 to 19
11 to 18
Fatigue Strength, MPa 59 to 110
130 to 210
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 110 to 160
190 to 210
Tensile Strength: Ultimate (UTS), MPa 180 to 280
320 to 340
Tensile Strength: Yield (Proof), MPa 67 to 250
150 to 250

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
190
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 610
570
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 150
120
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
29
Electrical Conductivity: Equal Weight (Specific), % IACS 120
97

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.5
9.0
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
33 to 46
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
170 to 470
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 18 to 29
33 to 35
Strength to Weight: Bending, points 26 to 35
38 to 40
Thermal Diffusivity, mm2/s 61
48
Thermal Shock Resistance, points 7.9 to 13
14 to 15

Alloy Composition


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Aluminum (Al), % 95.5 to 98.2
92 to 94.8
Chromium (Cr), % 0 to 0.15
0.050 to 0.2
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.4
Magnesium (Mg), % 1.7 to 2.4
4.7 to 5.5
Manganese (Mn), % 0.1 to 0.5
0.5 to 1.0
Silicon (Si), % 0 to 0.4
0 to 0.25
Titanium (Ti), % 0 to 0.15
0 to 0.2
Zinc (Zn), % 0 to 0.15
0 to 0.25
Residuals, % 0 to 0.15
0 to 0.15

Comparable Variants