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AWS BVAg-18 vs. AWS BAg-37

Both AWS BVAg-18 and AWS BAg-37 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 57% of their average alloy composition in common.

For each property being compared, the top bar is AWS BVAg-18 and the bottom bar is AWS BAg-37.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
94
Poisson's Ratio 0.36
0.32
Shear Modulus, GPa 30
36
Tensile Strength: Ultimate (UTS), MPa 180
180

Thermal Properties

Brazing Temperature, °C 720 to 840
780 to 890
Latent Heat of Fusion, J/g 140
150
Melting Completion (Liquidus), °C 720
780
Melting Onset (Solidus), °C 600
690
Specific Heat Capacity, J/kg-K 280
350
Thermal Expansion, µm/m-K 19
21

Otherwise Unclassified Properties

Density, g/cm3 9.7
8.5
Embodied Carbon, kg CO2/kg material 59
26
Embodied Energy, MJ/kg 930
410

Common Calculations

Stiffness to Weight: Axial, points 4.7
6.1
Stiffness to Weight: Bending, points 15
18
Strength to Weight: Axial, points 5.1
5.9
Strength to Weight: Bending, points 7.3
8.3
Thermal Shock Resistance, points 8.1
6.6

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 28.5 to 31.5
39 to 41
Lead (Pb), % 0 to 0.0020
0
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 59 to 61
24 to 26
Tin (Sn), % 9.5 to 10.5
1.5 to 2.5
Zinc (Zn), % 0 to 0.0010
31 to 35
Residuals, % 0
0 to 0.15