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AWS E385 vs. 7475 Aluminum

AWS E385 belongs to the iron alloys classification, while 7475 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 7475 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
70
Elongation at Break, % 34
10 to 12
Poisson's Ratio 0.28
0.32
Shear Modulus, GPa 79
26
Tensile Strength: Ultimate (UTS), MPa 580
530 to 590

Thermal Properties

Latent Heat of Fusion, J/g 300
380
Melting Completion (Liquidus), °C 1440
640
Melting Onset (Solidus), °C 1390
480
Specific Heat Capacity, J/kg-K 460
870
Thermal Conductivity, W/m-K 14
140 to 160
Thermal Expansion, µm/m-K 14
23

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
33 to 42
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
98 to 120

Otherwise Unclassified Properties

Base Metal Price, % relative 31
10
Density, g/cm3 8.1
3.0
Embodied Carbon, kg CO2/kg material 5.8
8.2
Embodied Energy, MJ/kg 79
150
Embodied Water, L/kg 200
1130

Common Calculations

Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
46
Strength to Weight: Axial, points 20
49 to 55
Strength to Weight: Bending, points 19
48 to 52
Thermal Diffusivity, mm2/s 3.6
53 to 63
Thermal Shock Resistance, points 15
23 to 26

Alloy Composition


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Aluminum (Al), % 0
88.6 to 91.6
Carbon (C), % 0 to 0.030
0
Chromium (Cr), % 19.5 to 21.5
0.18 to 0.25
Copper (Cu), % 1.2 to 2.0
1.2 to 1.9
Iron (Fe), % 41.8 to 50.1
0 to 0.12
Magnesium (Mg), % 0
1.9 to 2.6
Manganese (Mn), % 1.0 to 2.5
0 to 0.060
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 0.1
Sulfur (S), % 0 to 0.020
0
Titanium (Ti), % 0
0 to 0.060
Zinc (Zn), % 0
5.1 to 6.2
Residuals, % 0
0 to 0.15