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5251 Aluminum vs. 3102 Aluminum

Both 5251 aluminum and 3102 aluminum are aluminum alloys. They have a very high 98% 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 3102 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 2.0 to 19
23 to 28
Fatigue Strength, MPa 59 to 110
31 to 34
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 110 to 160
58 to 65
Tensile Strength: Ultimate (UTS), MPa 180 to 280
92 to 100
Tensile Strength: Yield (Proof), MPa 67 to 250
28 to 34

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 650
640
Melting Onset (Solidus), °C 610
640
Specific Heat Capacity, J/kg-K 900
900
Thermal Conductivity, W/m-K 150
230
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
56
Electrical Conductivity: Equal Weight (Specific), % IACS 120
190

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.0
Density, g/cm3 2.7
2.7
Embodied Carbon, kg CO2/kg material 8.5
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
16 to 22
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
5.8 to 8.3
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
50
Strength to Weight: Axial, points 18 to 29
9.4 to 10
Strength to Weight: Bending, points 26 to 35
17 to 18
Thermal Diffusivity, mm2/s 61
92
Thermal Shock Resistance, points 7.9 to 13
4.1 to 4.4

Alloy Composition


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Aluminum (Al), % 95.5 to 98.2
97.9 to 99.95
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
0 to 0.1
Iron (Fe), % 0 to 0.5
0 to 0.7
Magnesium (Mg), % 1.7 to 2.4
0
Manganese (Mn), % 0.1 to 0.5
0.050 to 0.4
Silicon (Si), % 0 to 0.4
0 to 0.4
Titanium (Ti), % 0 to 0.15
0 to 0.1
Zinc (Zn), % 0 to 0.15
0 to 0.3
Residuals, % 0 to 0.15
0 to 0.15

Comparable Variants