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5251 Aluminum vs. 384.0 Aluminum

Both 5251 aluminum and 384.0 aluminum are aluminum alloys. They have 83% of their average alloy composition in common.

For each property being compared, the top bar is 5251 aluminum and the bottom bar is 384.0 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 44 to 79
85
Elastic (Young's, Tensile) Modulus, GPa 68
74
Elongation at Break, % 2.0 to 19
2.5
Fatigue Strength, MPa 59 to 110
140
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
28
Shear Strength, MPa 110 to 160
200
Tensile Strength: Ultimate (UTS), MPa 180 to 280
330
Tensile Strength: Yield (Proof), MPa 67 to 250
170

Thermal Properties

Latent Heat of Fusion, J/g 400
550
Maximum Temperature: Mechanical, °C 180
170
Melting Completion (Liquidus), °C 650
580
Melting Onset (Solidus), °C 610
530
Specific Heat Capacity, J/kg-K 900
870
Thermal Conductivity, W/m-K 150
96
Thermal Expansion, µm/m-K 24
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
22
Electrical Conductivity: Equal Weight (Specific), % IACS 120
69

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
11
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.5
7.4
Embodied Energy, MJ/kg 150
140
Embodied Water, L/kg 1180
1010

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 5.4 to 27
6.9
Resilience: Unit (Modulus of Resilience), kJ/m3 33 to 450
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 50
49
Strength to Weight: Axial, points 18 to 29
32
Strength to Weight: Bending, points 26 to 35
37
Thermal Diffusivity, mm2/s 61
39
Thermal Shock Resistance, points 7.9 to 13
15

Alloy Composition

Aluminum (Al), % 95.5 to 98.2
77.3 to 86.5
Chromium (Cr), % 0 to 0.15
0
Copper (Cu), % 0 to 0.15
3.0 to 4.5
Iron (Fe), % 0 to 0.5
0 to 1.3
Magnesium (Mg), % 1.7 to 2.4
0 to 0.1
Manganese (Mn), % 0.1 to 0.5
0 to 0.5
Nickel (Ni), % 0
0 to 0.5
Silicon (Si), % 0 to 0.4
10.5 to 12
Tin (Sn), % 0
0 to 0.35
Titanium (Ti), % 0 to 0.15
0
Zinc (Zn), % 0 to 0.15
0 to 3.0
Residuals, % 0 to 0.15
0 to 0.5