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AWS BVAg-8b vs. AWS BVAg-31

Both AWS BVAg-8b and AWS BVAg-31 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 86% of their average alloy composition in common.

For each property being compared, the top bar is AWS BVAg-8b and the bottom bar is AWS BVAg-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
90
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 31
33
Tensile Strength: Ultimate (UTS), MPa 170
180

Thermal Properties

Brazing Temperature, °C 800 to 900
850 to 890
Latent Heat of Fusion, J/g 140
150
Melting Completion (Liquidus), °C 800
850
Melting Onset (Solidus), °C 780
820
Specific Heat Capacity, J/kg-K 280
280
Thermal Expansion, µm/m-K 19
18

Otherwise Unclassified Properties

Density, g/cm3 10
10

Common Calculations

Stiffness to Weight: Axial, points 4.7
4.9
Stiffness to Weight: Bending, points 15
15
Strength to Weight: Axial, points 4.7
4.9
Strength to Weight: Bending, points 6.8
7.0
Thermal Shock Resistance, points 7.6
7.8

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0 to 0.0010
Carbon (C), % 0 to 0.0050
0 to 0.0050
Copper (Cu), % 26.8 to 29.2
31 to 33
Lead (Pb), % 0 to 0.0020
0 to 0.0020
Nickel (Ni), % 0.3 to 0.7
0
Palladium (Pd), % 0
8.0 to 12
Phosphorus (P), % 0 to 0.0020
0 to 0.0020
Silver (Ag), % 70.5 to 72.5
57 to 59
Zinc (Zn), % 0 to 0.0010
0 to 0.0010