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6008 Aluminum vs. 7178 Aluminum

Both 6008 aluminum and 7178 aluminum are aluminum alloys. They have 89% of their average alloy composition in common.

For each property being compared, the top bar is 6008 aluminum and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
71
Elongation at Break, % 9.1 to 17
4.5 to 12
Fatigue Strength, MPa 55 to 88
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 120 to 170
140 to 380
Tensile Strength: Ultimate (UTS), MPa 200 to 290
240 to 640
Tensile Strength: Yield (Proof), MPa 100 to 220
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 410
370
Maximum Temperature: Mechanical, °C 180
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 620
480
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 190
130
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 49
31
Electrical Conductivity: Equal Weight (Specific), % IACS 160
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.5
8.2
Embodied Energy, MJ/kg 160
150
Embodied Water, L/kg 1180
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 28
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 76 to 360
110 to 2220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
45
Strength to Weight: Axial, points 21 to 29
21 to 58
Strength to Weight: Bending, points 28 to 35
28 to 54
Thermal Diffusivity, mm2/s 77
47
Thermal Shock Resistance, points 9.0 to 13
10 to 28

Alloy Composition

Aluminum (Al), % 96.5 to 99.1
85.4 to 89.5
Chromium (Cr), % 0 to 0.3
0.18 to 0.28
Copper (Cu), % 0 to 0.3
1.6 to 2.4
Iron (Fe), % 0 to 0.35
0 to 0.5
Magnesium (Mg), % 0.4 to 0.7
2.4 to 3.1
Manganese (Mn), % 0 to 0.3
0 to 0.3
Silicon (Si), % 0.5 to 0.9
0 to 0.4
Titanium (Ti), % 0 to 0.1
0 to 0.2
Vanadium (V), % 0.050 to 0.2
0
Zinc (Zn), % 0 to 0.2
6.3 to 7.3
Residuals, % 0
0 to 0.15

Comparable Variants