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7050 Aluminum vs. 8176 Aluminum

Both 7050 aluminum and 8176 aluminum are aluminum alloys. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is 7050 aluminum and the bottom bar is 8176 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
69
Elongation at Break, % 2.2 to 12
15
Fatigue Strength, MPa 130 to 210
59
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 280 to 330
70
Tensile Strength: Ultimate (UTS), MPa 490 to 570
160
Tensile Strength: Yield (Proof), MPa 390 to 500
95

Thermal Properties

Latent Heat of Fusion, J/g 370
400
Maximum Temperature: Mechanical, °C 190
170
Melting Completion (Liquidus), °C 630
660
Melting Onset (Solidus), °C 490
650
Specific Heat Capacity, J/kg-K 860
900
Thermal Conductivity, W/m-K 140
230
Thermal Expansion, µm/m-K 24
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
61
Electrical Conductivity: Equal Weight (Specific), % IACS 100
200

Otherwise Unclassified Properties

Base Metal Price, % relative 10
9.5
Density, g/cm3 3.1
2.7
Embodied Carbon, kg CO2/kg material 8.2
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1120
1190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 55
21
Resilience: Unit (Modulus of Resilience), kJ/m3 1110 to 1760
66
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 45
50
Strength to Weight: Axial, points 45 to 51
16
Strength to Weight: Bending, points 45 to 50
24
Thermal Diffusivity, mm2/s 54
93
Thermal Shock Resistance, points 21 to 25
7.0

Alloy Composition

Aluminum (Al), % 87.3 to 92.1
98.6 to 99.6
Chromium (Cr), % 0 to 0.040
0
Copper (Cu), % 2.0 to 2.6
0
Gallium (Ga), % 0
0 to 0.030
Iron (Fe), % 0 to 0.15
0.4 to 1.0
Magnesium (Mg), % 1.9 to 2.6
0
Manganese (Mn), % 0 to 0.1
0
Silicon (Si), % 0 to 0.12
0.030 to 0.15
Titanium (Ti), % 0 to 0.060
0
Zinc (Zn), % 5.7 to 6.7
0 to 0.1
Zirconium (Zr), % 0.080 to 0.15
0
Residuals, % 0
0 to 0.15