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AWS E120C-K4 vs. 2218 Aluminum

AWS E120C-K4 belongs to the iron alloys classification, while 2218 aluminum belongs to the aluminum 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 AWS E120C-K4 and the bottom bar is 2218 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
73
Elongation at Break, % 17
6.8 to 10
Poisson's Ratio 0.29
0.33
Shear Modulus, GPa 73
27
Tensile Strength: Ultimate (UTS), MPa 950
330 to 430
Tensile Strength: Yield (Proof), MPa 840
260 to 310

Thermal Properties

Latent Heat of Fusion, J/g 250
390
Melting Completion (Liquidus), °C 1460
640
Melting Onset (Solidus), °C 1410
510
Specific Heat Capacity, J/kg-K 470
870
Thermal Conductivity, W/m-K 41
140
Thermal Expansion, µm/m-K 13
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.0
37
Electrical Conductivity: Equal Weight (Specific), % IACS 9.2
110

Otherwise Unclassified Properties

Base Metal Price, % relative 3.5
11
Density, g/cm3 7.8
3.1
Embodied Carbon, kg CO2/kg material 1.7
8.2
Embodied Energy, MJ/kg 23
150
Embodied Water, L/kg 54
1130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
27 to 31
Resilience: Unit (Modulus of Resilience), kJ/m3 1880
450 to 650
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
45
Strength to Weight: Axial, points 34
30 to 39
Strength to Weight: Bending, points 27
34 to 41
Thermal Diffusivity, mm2/s 11
52
Thermal Shock Resistance, points 28
15 to 19

Alloy Composition

Aluminum (Al), % 0
88.8 to 93.6
Carbon (C), % 0 to 0.15
0
Chromium (Cr), % 0.15 to 0.65
0 to 0.1
Copper (Cu), % 0 to 0.35
3.5 to 4.5
Iron (Fe), % 92.1 to 98.4
0 to 1.0
Magnesium (Mg), % 0
1.2 to 1.8
Manganese (Mn), % 0.75 to 2.3
0 to 0.2
Molybdenum (Mo), % 0.25 to 0.65
0
Nickel (Ni), % 0.5 to 2.5
1.7 to 2.3
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.8
0 to 0.9
Sulfur (S), % 0 to 0.025
0
Vanadium (V), % 0 to 0.030
0
Zinc (Zn), % 0
0 to 0.25
Residuals, % 0
0 to 0.15