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AWS E385 vs. 3203 Aluminum

AWS E385 belongs to the iron alloys classification, while 3203 aluminum belongs to the aluminum alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, 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 E385 and the bottom bar is 3203 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
4.5 to 29
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Tensile Strength: Ultimate (UTS), MPa 580
110 to 200

Thermal Properties

Latent Heat of Fusion, J/g 300
400
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1390
620
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 14
170
Thermal Expansion, µm/m-K 14
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
43
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
140

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.0
Density, g/cm3 8.1
2.8
Embodied Carbon, kg CO2/kg material 5.8
8.1
Embodied Energy, MJ/kg 79
150
Embodied Water, L/kg 200
1180

Common Calculations

Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
50
Strength to Weight: Axial, points 20
11 to 20
Strength to Weight: Bending, points 19
19 to 28
Thermal Diffusivity, mm2/s 3.6
70
Thermal Shock Resistance, points 15
4.9 to 8.8

Alloy Composition

Aluminum (Al), % 0
96.9 to 99
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 19.5 to 21.5
0
Copper (Cu), % 1.2 to 2.0
0 to 0.050
Iron (Fe), % 41.8 to 50.1
0 to 0.7
Manganese (Mn), % 1.0 to 2.5
1.0 to 1.5
Molybdenum (Mo), % 4.2 to 5.2
0
Nickel (Ni), % 24 to 26
0
Phosphorus (P), % 0 to 0.030
0
Silicon (Si), % 0 to 0.9
0 to 0.6
Sulfur (S), % 0 to 0.020
0
Zinc (Zn), % 0
0 to 0.1
Residuals, % 0
0 to 0.15