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707.0 Aluminum vs. 7178 Aluminum

Both 707.0 aluminum and 7178 aluminum are aluminum alloys. They have a moderately high 95% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is 707.0 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, % 1.7 to 3.4
4.5 to 12
Fatigue Strength, MPa 75 to 140
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Tensile Strength: Ultimate (UTS), MPa 270 to 300
240 to 640
Tensile Strength: Yield (Proof), MPa 170 to 250
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 380
370
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 630
630
Melting Onset (Solidus), °C 600
480
Specific Heat Capacity, J/kg-K 880
860
Thermal Conductivity, W/m-K 150
130
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 37
31
Electrical Conductivity: Equal Weight (Specific), % IACS 110
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 1140
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 4.3 to 8.6
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 210 to 430
110 to 2220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 47
45
Strength to Weight: Axial, points 26 to 29
21 to 58
Strength to Weight: Bending, points 32 to 34
28 to 54
Thermal Diffusivity, mm2/s 58
47
Thermal Shock Resistance, points 12 to 13
10 to 28

Alloy Composition

Aluminum (Al), % 90.5 to 93.6
85.4 to 89.5
Chromium (Cr), % 0.2 to 0.4
0.18 to 0.28
Copper (Cu), % 0 to 0.2
1.6 to 2.4
Iron (Fe), % 0 to 0.8
0 to 0.5
Magnesium (Mg), % 1.8 to 2.4
2.4 to 3.1
Manganese (Mn), % 0.4 to 0.6
0 to 0.3
Silicon (Si), % 0 to 0.2
0 to 0.4
Titanium (Ti), % 0 to 0.25
0 to 0.2
Zinc (Zn), % 4.0 to 4.5
6.3 to 7.3
Residuals, % 0
0 to 0.15