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AWS BVAg-8b vs. 7178 Aluminum

AWS BVAg-8b belongs to the otherwise unclassified metals classification, while 7178 aluminum belongs to the aluminum alloys. There are 15 material properties with values for both materials. Properties with values for just one material (16, 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 BVAg-8b and the bottom bar is 7178 aluminum.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
71
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 31
27
Tensile Strength: Ultimate (UTS), MPa 170
240 to 640

Thermal Properties

Latent Heat of Fusion, J/g 140
370
Melting Completion (Liquidus), °C 800
630
Melting Onset (Solidus), °C 780
480
Specific Heat Capacity, J/kg-K 280
860
Thermal Expansion, µm/m-K 19
23

Otherwise Unclassified Properties

Density, g/cm3 10
3.1

Common Calculations

Stiffness to Weight: Axial, points 4.7
13
Stiffness to Weight: Bending, points 15
45
Strength to Weight: Axial, points 4.7
21 to 58
Strength to Weight: Bending, points 6.8
28 to 54
Thermal Shock Resistance, points 7.6
10 to 28

Alloy Composition

Aluminum (Al), % 0
85.4 to 89.5
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0
Chromium (Cr), % 0
0.18 to 0.28
Copper (Cu), % 26.8 to 29.2
1.6 to 2.4
Iron (Fe), % 0
0 to 0.5
Lead (Pb), % 0 to 0.0020
0
Magnesium (Mg), % 0
2.4 to 3.1
Manganese (Mn), % 0
0 to 0.3
Nickel (Ni), % 0.3 to 0.7
0
Phosphorus (P), % 0 to 0.0020
0
Silicon (Si), % 0
0 to 0.4
Silver (Ag), % 70.5 to 72.5
0
Titanium (Ti), % 0
0 to 0.2
Zinc (Zn), % 0 to 0.0010
6.3 to 7.3
Residuals, % 0
0 to 0.15