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AWS BVAg-8 vs. AWS BCo-1

AWS BVAg-8 belongs to the otherwise unclassified metals classification, while AWS BCo-1 belongs to the cobalt alloys. There are 16 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-8 and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
200
Poisson's Ratio 0.36
0.3
Shear Modulus, GPa 31
78
Tensile Strength: Ultimate (UTS), MPa 170
700

Thermal Properties

Brazing Temperature, °C 780 to 900
1150 to 1230
Latent Heat of Fusion, J/g 140
420
Melting Completion (Liquidus), °C 780
1150
Melting Onset (Solidus), °C 780
1120
Specific Heat Capacity, J/kg-K 280
480
Thermal Expansion, µm/m-K 19
12

Otherwise Unclassified Properties

Density, g/cm3 10
8.1

Common Calculations

Stiffness to Weight: Axial, points 4.6
14
Stiffness to Weight: Bending, points 14
24
Strength to Weight: Axial, points 4.7
24
Strength to Weight: Bending, points 6.8
22
Thermal Shock Resistance, points 7.6
21

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Boron (B), % 0
0.7 to 0.9
Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0.35 to 0.45
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
46 to 54
Copper (Cu), % 27 to 29
0
Iron (Fe), % 0
0 to 1.0
Lead (Pb), % 0 to 0.0020
0
Nickel (Ni), % 0
16 to 18
Phosphorus (P), % 0 to 0.0020
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
7.5 to 8.5
Silver (Ag), % 71 to 73
0
Sulfur (S), % 0
0 to 0.020
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5