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7050 Aluminum vs. 6018 Aluminum

Both 7050 aluminum and 6018 aluminum are aluminum alloys. They have a moderately high 91% of their average alloy composition in common.

For each property being compared, the top bar is 7050 aluminum and the bottom bar is 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 70
69
Elongation at Break, % 2.2 to 12
9.0 to 9.1
Fatigue Strength, MPa 130 to 210
85 to 89
Poisson's Ratio 0.32
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 280 to 330
170 to 180
Tensile Strength: Ultimate (UTS), MPa 490 to 570
290 to 300
Tensile Strength: Yield (Proof), MPa 390 to 500
220 to 230

Thermal Properties

Latent Heat of Fusion, J/g 370
400
Maximum Temperature: Mechanical, °C 190
160
Melting Completion (Liquidus), °C 630
640
Melting Onset (Solidus), °C 490
570
Specific Heat Capacity, J/kg-K 860
890
Thermal Conductivity, W/m-K 140
170
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 35
44
Electrical Conductivity: Equal Weight (Specific), % IACS 100
140

Otherwise Unclassified Properties

Base Metal Price, % relative 10
10
Density, g/cm3 3.1
2.9
Embodied Carbon, kg CO2/kg material 8.2
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1120
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 10 to 55
24 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 1110 to 1760
360 to 380
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 45
48
Strength to Weight: Axial, points 45 to 51
28 to 29
Strength to Weight: Bending, points 45 to 50
34 to 35
Thermal Diffusivity, mm2/s 54
65
Thermal Shock Resistance, points 21 to 25
13

Alloy Composition

Aluminum (Al), % 87.3 to 92.1
93.1 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Chromium (Cr), % 0 to 0.040
0 to 0.1
Copper (Cu), % 2.0 to 2.6
0.15 to 0.4
Iron (Fe), % 0 to 0.15
0 to 0.7
Lead (Pb), % 0
0.4 to 1.2
Magnesium (Mg), % 1.9 to 2.6
0.6 to 1.2
Manganese (Mn), % 0 to 0.1
0.3 to 0.8
Silicon (Si), % 0 to 0.12
0.5 to 1.2
Titanium (Ti), % 0 to 0.060
0 to 0.2
Zinc (Zn), % 5.7 to 6.7
0 to 0.3
Zirconium (Zr), % 0.080 to 0.15
0
Residuals, % 0
0 to 0.15