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5251 Aluminum vs. A206.0 Aluminum

Both 5251 aluminum and A206.0 aluminum are aluminum alloys. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5251 aluminum and the bottom bar is A206.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 44 to 79
100 to 110
Elastic (Young's, Tensile) Modulus, GPa 68
70
Elongation at Break, % 2.0 to 19
4.2 to 10
Fatigue Strength, MPa 59 to 110
90 to 180
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 110 to 160
260
Tensile Strength: Ultimate (UTS), MPa 180 to 280
390 to 440
Tensile Strength: Yield (Proof), MPa 67 to 250
250 to 380

Thermal Properties

Latent Heat of Fusion, J/g 400
390
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 650
670
Melting Onset (Solidus), °C 610
550
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
30
Electrical Conductivity: Equal Weight (Specific), % IACS 120
90

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
3.0
Embodied Carbon, kg CO2/kg material 8.5
8.0
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
16 to 37
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
440 to 1000
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
46
Strength to Weight: Axial, points 18 to 29
36 to 41
Strength to Weight: Bending, points 26 to 35
39 to 43
Thermal Diffusivity, mm2/s 61
48
Thermal Shock Resistance, points 7.9 to 13
17 to 19

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
93.9 to 95.7
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
4.2 to 5.0
Iron (Fe), % 0 to 0.5
0 to 0.1
Magnesium (Mg), % 1.7 to 2.4
0 to 0.15
Manganese (Mn), % 0.1 to 0.5
0 to 0.2
Nickel (Ni), % 0
0 to 0.050
Silicon (Si), % 0 to 0.4
0 to 0.050
Tin (Sn), % 0
0 to 0.050
Titanium (Ti), % 0 to 0.15
0.15 to 0.3
Zinc (Zn), % 0 to 0.15
0 to 0.1
Residuals, % 0 to 0.15
0 to 0.15