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AWS BAg-21 vs. AWS BVAg-31

Both AWS BAg-21 and AWS BVAg-31 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 87% of their average alloy composition in common. There are 16 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-21 and the bottom bar is AWS BVAg-31.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 85
90
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 31
33
Tensile Strength: Ultimate (UTS), MPa 150
180

Thermal Properties

Brazing Temperature, °C 700 to 900
850 to 890
Latent Heat of Fusion, J/g 140
150
Melting Completion (Liquidus), °C 800
850
Melting Onset (Solidus), °C 690
820
Specific Heat Capacity, J/kg-K 280
280
Thermal Expansion, µm/m-K 19
18

Otherwise Unclassified Properties

Density, g/cm3 9.8
10

Common Calculations

Stiffness to Weight: Axial, points 4.8
4.9
Stiffness to Weight: Bending, points 15
15
Strength to Weight: Axial, points 4.2
4.9
Strength to Weight: Bending, points 6.4
7.0
Thermal Shock Resistance, points 6.6
7.8

Alloy Composition


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Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 27.5 to 29.5
31 to 33
Lead (Pb), % 0
0 to 0.0020
Nickel (Ni), % 2.0 to 3.0
0
Palladium (Pd), % 0
8.0 to 12
Phosphorus (P), % 0
0 to 0.0020
Silver (Ag), % 62 to 64
57 to 59
Tin (Sn), % 5.0 to 7.0
0
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 0 to 0.15
0