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7005 Aluminum vs. 7178 Aluminum

Both 7005 aluminum and 7178 aluminum are aluminum alloys. They have a moderately high 94% 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 7005 aluminum and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
71
Elongation at Break, % 10 to 20
4.5 to 12
Fatigue Strength, MPa 100 to 190
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 120 to 230
140 to 380
Tensile Strength: Ultimate (UTS), MPa 200 to 400
240 to 640
Tensile Strength: Yield (Proof), MPa 95 to 350
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 380
370
Maximum Temperature: Mechanical, °C 200
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 610
480
Specific Heat Capacity, J/kg-K 880
860
Thermal Conductivity, W/m-K 140 to 170
130
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35 to 43
31
Electrical Conductivity: Equal Weight (Specific), % IACS 110 to 130
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.9
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1150
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 32 to 57
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 65 to 850
110 to 2220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
45
Strength to Weight: Axial, points 19 to 38
21 to 58
Strength to Weight: Bending, points 26 to 41
28 to 54
Thermal Diffusivity, mm2/s 54 to 65
47
Thermal Shock Resistance, points 8.7 to 18
10 to 28

Alloy Composition

Aluminum (Al), % 91 to 94.7
85.4 to 89.5
Chromium (Cr), % 0.060 to 0.2
0.18 to 0.28
Copper (Cu), % 0 to 0.1
1.6 to 2.4
Iron (Fe), % 0 to 0.4
0 to 0.5
Magnesium (Mg), % 1.0 to 1.8
2.4 to 3.1
Manganese (Mn), % 0.2 to 0.7
0 to 0.3
Silicon (Si), % 0 to 0.35
0 to 0.4
Titanium (Ti), % 0.010 to 0.060
0 to 0.2
Zinc (Zn), % 4.0 to 5.0
6.3 to 7.3
Zirconium (Zr), % 0.080 to 0.2
0
Residuals, % 0
0 to 0.15

Comparable Variants