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5042 Aluminum vs. 6018 Aluminum

Both 5042 aluminum and 6018 aluminum are aluminum alloys. They have a very high 97% of their average alloy composition in common.

For each property being compared, the top bar is 5042 aluminum and the bottom bar is 6018 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 68
69
Elongation at Break, % 1.1 to 3.4
9.0 to 9.1
Fatigue Strength, MPa 97 to 120
85 to 89
Poisson's Ratio 0.33
0.33
Shear Modulus, GPa 26
26
Shear Strength, MPa 200
170 to 180
Tensile Strength: Ultimate (UTS), MPa 340 to 360
290 to 300
Tensile Strength: Yield (Proof), MPa 270 to 310
220 to 230

Thermal Properties

Latent Heat of Fusion, J/g 400
400
Maximum Temperature: Mechanical, °C 180
160
Melting Completion (Liquidus), °C 640
640
Melting Onset (Solidus), °C 570
570
Specific Heat Capacity, J/kg-K 900
890
Thermal Conductivity, W/m-K 130
170
Thermal Expansion, µm/m-K 24
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 33
44
Electrical Conductivity: Equal Weight (Specific), % IACS 110
140

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
10
Density, g/cm3 2.7
2.9
Embodied Carbon, kg CO2/kg material 8.8
8.2
Embodied Energy, MJ/kg 150
150
Embodied Water, L/kg 1180
1180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 3.6 to 12
24 to 25
Resilience: Unit (Modulus of Resilience), kJ/m3 550 to 720
360 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 50
48
Strength to Weight: Axial, points 35 to 37
28 to 29
Strength to Weight: Bending, points 40 to 42
34 to 35
Thermal Diffusivity, mm2/s 53
65
Thermal Shock Resistance, points 15 to 16
13

Alloy Composition

Aluminum (Al), % 94.2 to 96.8
93.1 to 97.8
Bismuth (Bi), % 0
0.4 to 0.7
Chromium (Cr), % 0 to 0.1
0 to 0.1
Copper (Cu), % 0 to 0.15
0.15 to 0.4
Iron (Fe), % 0 to 0.35
0 to 0.7
Lead (Pb), % 0
0.4 to 1.2
Magnesium (Mg), % 3.0 to 4.0
0.6 to 1.2
Manganese (Mn), % 0.2 to 0.5
0.3 to 0.8
Silicon (Si), % 0 to 0.2
0.5 to 1.2
Titanium (Ti), % 0 to 0.1
0 to 0.2
Zinc (Zn), % 0 to 0.25
0 to 0.3
Residuals, % 0
0 to 0.15