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AWS E385 vs. 6351 Aluminum

AWS E385 belongs to the iron alloys classification, while 6351 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 6351 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
69
Elongation at Break, % 34
7.8 to 18
Poisson's Ratio 0.28
0.33
Shear Modulus, GPa 79
26
Tensile Strength: Ultimate (UTS), MPa 580
140 to 310

Thermal Properties

Latent Heat of Fusion, J/g 300
410
Melting Completion (Liquidus), °C 1440
650
Melting Onset (Solidus), °C 1390
570
Specific Heat Capacity, J/kg-K 460
900
Thermal Conductivity, W/m-K 14
180
Thermal Expansion, µm/m-K 14
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
46
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
150

Otherwise Unclassified Properties

Base Metal Price, % relative 31
9.5
Density, g/cm3 8.1
2.7
Embodied Carbon, kg CO2/kg material 5.8
8.3
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
14 to 32
Strength to Weight: Bending, points 19
22 to 38
Thermal Diffusivity, mm2/s 3.6
72
Thermal Shock Resistance, points 15
6.1 to 14

Alloy Composition

Aluminum (Al), % 0
96 to 98.5
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 19.5 to 21.5
0
Copper (Cu), % 1.2 to 2.0
0 to 0.1
Iron (Fe), % 41.8 to 50.1
0 to 0.5
Magnesium (Mg), % 0
0.4 to 0.8
Manganese (Mn), % 1.0 to 2.5
0.4 to 0.8
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
0.7 to 1.3
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0
0 to 0.2
Residuals, % 0
0 to 0.15