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5254 Aluminum vs. 7108 Aluminum

Both 5254 aluminum and 7108 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common.

For each property being compared, the top bar is 5254 aluminum and the bottom bar is 7108 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 3.4 to 22
11
Fatigue Strength, MPa 110 to 160
120
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 150 to 200
210
Tensile Strength: Ultimate (UTS), MPa 240 to 350
350
Tensile Strength: Yield (Proof), MPa 100 to 270
290

Thermal Properties

Latent Heat of Fusion, J/g 400
380
Maximum Temperature: Mechanical, °C 190
210
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 590
530
Specific Heat Capacity, J/kg-K 900
880
Thermal Conductivity, W/m-K 130
150
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 32
39
Electrical Conductivity: Equal Weight (Specific), % IACS 110
120

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
9.5
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.8
8.3
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1150

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 11 to 41
38
Resilience: Unit (Modulus of Resilience), kJ/m3 73 to 550
620
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
47
Strength to Weight: Axial, points 25 to 37
34
Strength to Weight: Bending, points 32 to 41
38
Thermal Diffusivity, mm2/s 52
59
Thermal Shock Resistance, points 10 to 16
16

Alloy Composition


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Aluminum (Al), % 94.4 to 96.8
92.4 to 94.7
Chromium (Cr), % 0.15 to 0.35
0
Copper (Cu), % 0 to 0.050
0 to 0.050
Iron (Fe), % 0 to 0.45
0 to 0.1
Magnesium (Mg), % 3.1 to 3.9
0.7 to 1.4
Manganese (Mn), % 0 to 0.010
0 to 0.050
Silicon (Si), % 0 to 0.45
0 to 0.1
Titanium (Ti), % 0 to 0.050
0 to 0.050
Zinc (Zn), % 0 to 0.2
4.5 to 5.5
Zirconium (Zr), % 0
0.12 to 0.25
Residuals, % 0 to 0.15
0 to 0.15