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ASTM B780 Alloy vs. AWS BVAg-31

Both ASTM B780 alloy and AWS BVAg-31 are otherwise unclassified metals. They have 83% of their average alloy composition in common. There are 13 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM B780 alloy and the bottom bar is AWS BVAg-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
90
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 30
33
Tensile Strength: Ultimate (UTS), MPa 330 to 590
180

Thermal Properties

Latent Heat of Fusion, J/g 140
150
Specific Heat Capacity, J/kg-K 270
280
Thermal Expansion, µm/m-K 18
18

Otherwise Unclassified Properties

Density, g/cm3 10
10

Common Calculations

Stiffness to Weight: Axial, points 4.5
4.9
Stiffness to Weight: Bending, points 14
15
Strength to Weight: Axial, points 9.1 to 16
4.9
Strength to Weight: Bending, points 11 to 15
7.0
Thermal Shock Resistance, points 16 to 29
7.8

Alloy Composition

Cadmium (Cd), % 0 to 0.050
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 23.5 to 25.7
31 to 33
Iron (Fe), % 0 to 0.050
0
Lead (Pb), % 0 to 0.030
0 to 0.0020
Nickel (Ni), % 0.35 to 0.65
0
Palladium (Pd), % 0
8.0 to 12
Phosphorus (P), % 0
0 to 0.0020
Silver (Ag), % 74 to 76
57 to 59
Zinc (Zn), % 0 to 0.060
0 to 0.0010