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511.0 Aluminum vs. 5251 Aluminum

Both 511.0 aluminum and 5251 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 511.0 aluminum and the bottom bar is 5251 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 50
44 to 79
Elastic (Young's, Tensile) Modulus, GPa 68
68
Elongation at Break, % 3.0
2.0 to 19
Fatigue Strength, MPa 55
59 to 110
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 25
26
Shear Strength, MPa 120
110 to 160
Tensile Strength: Ultimate (UTS), MPa 150
180 to 280
Tensile Strength: Yield (Proof), MPa 83
67 to 250

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 170
180
Melting Completion (Liquidus), °C 640
650
Melting Onset (Solidus), °C 590
610
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 140
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 36
37
Electrical Conductivity: Equal Weight (Specific), % IACS 120
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.8
8.5
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.7
5.4 to 27
Resilience: Unit (Modulus of Resilience), kJ/m3 51
33 to 450
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 51
50
Strength to Weight: Axial, points 15
18 to 29
Strength to Weight: Bending, points 23
26 to 35
Thermal Diffusivity, mm2/s 59
61
Thermal Shock Resistance, points 6.5
7.9 to 13

Alloy Composition

Aluminum (Al), % 93.3 to 96.2
95.5 to 98.2
Chromium (Cr), % 0
0 to 0.15
Copper (Cu), % 0 to 0.15
0 to 0.15
Iron (Fe), % 0 to 0.5
0 to 0.5
Magnesium (Mg), % 3.5 to 4.5
1.7 to 2.4
Manganese (Mn), % 0 to 0.35
0.1 to 0.5
Silicon (Si), % 0.3 to 0.7
0 to 0.4
Titanium (Ti), % 0 to 0.25
0 to 0.15
Zinc (Zn), % 0 to 0.15
0 to 0.15
Residuals, % 0
0 to 0.15