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6018 Aluminum vs. AWS ER90S-B9

6018 aluminum belongs to the aluminum alloys classification, while AWS ER90S-B9 belongs to the iron alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 6018 aluminum and the bottom bar is AWS ER90S-B9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 69
190
Elongation at Break, % 9.0 to 9.1
18
Poisson's Ratio 0.33
0.28
Shear Modulus, GPa 26
75
Tensile Strength: Ultimate (UTS), MPa 290 to 300
690
Tensile Strength: Yield (Proof), MPa 220 to 230
470

Thermal Properties

Latent Heat of Fusion, J/g 400
270
Melting Completion (Liquidus), °C 640
1450
Melting Onset (Solidus), °C 570
1410
Specific Heat Capacity, J/kg-K 890
470
Thermal Conductivity, W/m-K 170
25
Thermal Expansion, µm/m-K 23
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 44
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 140
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 10
7.0
Density, g/cm3 2.9
7.8
Embodied Carbon, kg CO2/kg material 8.2
2.6
Embodied Energy, MJ/kg 150
37
Embodied Water, L/kg 1180
91

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 24 to 25
110
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 380
570
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 48
25
Strength to Weight: Axial, points 28 to 29
25
Strength to Weight: Bending, points 34 to 35
22
Thermal Diffusivity, mm2/s 65
6.9
Thermal Shock Resistance, points 13
19

Alloy Composition

Aluminum (Al), % 93.1 to 97.8
0 to 0.040
Bismuth (Bi), % 0.4 to 0.7
0
Carbon (C), % 0
0.070 to 0.13
Chromium (Cr), % 0 to 0.1
8.0 to 10.5
Copper (Cu), % 0.15 to 0.4
0 to 0.2
Iron (Fe), % 0 to 0.7
84.4 to 90.7
Lead (Pb), % 0.4 to 1.2
0
Magnesium (Mg), % 0.6 to 1.2
0
Manganese (Mn), % 0.3 to 0.8
0 to 1.2
Molybdenum (Mo), % 0
0.85 to 1.2
Nickel (Ni), % 0
0 to 0.8
Niobium (Nb), % 0
0.020 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.010
Silicon (Si), % 0.5 to 1.2
0.15 to 0.5
Sulfur (S), % 0
0 to 0.010
Titanium (Ti), % 0 to 0.2
0
Vanadium (V), % 0
0.15 to 0.3
Zinc (Zn), % 0 to 0.3
0
Residuals, % 0
0 to 0.5