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6101A Aluminum vs. 7178 Aluminum

Both 6101A 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 6101A aluminum and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
71
Elongation at Break, % 11
4.5 to 12
Fatigue Strength, MPa 80
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 130
140 to 380
Tensile Strength: Ultimate (UTS), MPa 220
240 to 640
Tensile Strength: Yield (Proof), MPa 190
120 to 560

Thermal Properties

Latent Heat of Fusion, J/g 400
370
Maximum Temperature: Mechanical, °C 160
180
Melting Completion (Liquidus), °C 640
630
Melting Onset (Solidus), °C 630
480
Specific Heat Capacity, J/kg-K 900
860
Thermal Conductivity, W/m-K 200
130
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 55
31
Electrical Conductivity: Equal Weight (Specific), % IACS 180
91

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
3.1
Embodied Carbon, kg CO2/kg material 8.3
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 280
110 to 2220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 51
45
Strength to Weight: Axial, points 23
21 to 58
Strength to Weight: Bending, points 30
28 to 54
Thermal Diffusivity, mm2/s 84
47
Thermal Shock Resistance, points 10
10 to 28

Alloy Composition

Aluminum (Al), % 97.9 to 99.3
85.4 to 89.5
Chromium (Cr), % 0
0.18 to 0.28
Copper (Cu), % 0 to 0.050
1.6 to 2.4
Iron (Fe), % 0 to 0.4
0 to 0.5
Magnesium (Mg), % 0.4 to 0.9
2.4 to 3.1
Manganese (Mn), % 0
0 to 0.3
Silicon (Si), % 0.3 to 0.7
0 to 0.4
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
6.3 to 7.3
Residuals, % 0
0 to 0.15