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6262A Aluminum vs. 7178 Aluminum

Both 6262A aluminum and 7178 aluminum are aluminum alloys. They have 90% of their average alloy composition in common.

For each property being compared, the top bar is 6262A 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, % 4.5 to 11
4.5 to 12
Fatigue Strength, MPa 94 to 110
120 to 210
Poisson's Ratio 0.33
0.32
Shear Modulus, GPa 26
27
Shear Strength, MPa 190 to 240
140 to 380
Tensile Strength: Ultimate (UTS), MPa 310 to 410
240 to 640
Tensile Strength: Yield (Proof), MPa 270 to 370
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 580
480
Specific Heat Capacity, J/kg-K 890
860
Thermal Conductivity, W/m-K 170
130
Thermal Expansion, µm/m-K 23
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 45
31
Electrical Conductivity: Equal Weight (Specific), % IACS 140
91

Otherwise Unclassified Properties

Base Metal Price, % relative 11
10
Density, g/cm3 2.8
3.1
Embodied Carbon, kg CO2/kg material 8.4
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1190
1110

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 17 to 34
24 to 52
Resilience: Unit (Modulus of Resilience), kJ/m3 540 to 1000
110 to 2220
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 49
45
Strength to Weight: Axial, points 31 to 41
21 to 58
Strength to Weight: Bending, points 36 to 44
28 to 54
Thermal Diffusivity, mm2/s 67
47
Thermal Shock Resistance, points 14 to 18
10 to 28

Alloy Composition

Aluminum (Al), % 94.2 to 97.8
85.4 to 89.5
Bismuth (Bi), % 0.4 to 0.9
0
Chromium (Cr), % 0.040 to 0.14
0.18 to 0.28
Copper (Cu), % 0.15 to 0.4
1.6 to 2.4
Iron (Fe), % 0 to 0.7
0 to 0.5
Magnesium (Mg), % 0.8 to 1.2
2.4 to 3.1
Manganese (Mn), % 0 to 0.15
0 to 0.3
Silicon (Si), % 0.4 to 0.8
0 to 0.4
Tin (Sn), % 0.4 to 1.0
0
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.25
6.3 to 7.3
Residuals, % 0
0 to 0.15

Comparable Variants