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AWS BVAg-18 vs. AWS BAg-1a

Both AWS BVAg-18 and AWS BAg-1a are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 66% 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-1a.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
77
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 30
29
Tensile Strength: Ultimate (UTS), MPa 180
180

Thermal Properties

Brazing Temperature, °C 720 to 840
640 to 760
Latent Heat of Fusion, J/g 140
120
Melting Completion (Liquidus), °C 720
640
Melting Onset (Solidus), °C 600
630
Specific Heat Capacity, J/kg-K 280
280
Thermal Expansion, µm/m-K 19
22

Otherwise Unclassified Properties

Density, g/cm3 9.7
9.3
Embodied Carbon, kg CO2/kg material 59
48
Embodied Energy, MJ/kg 930
760

Common Calculations

Stiffness to Weight: Axial, points 4.7
4.6
Stiffness to Weight: Bending, points 15
15
Strength to Weight: Axial, points 5.1
5.4
Strength to Weight: Bending, points 7.3
7.6
Thermal Shock Resistance, points 8.1
7.5

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
17 to 19
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 28.5 to 31.5
14.5 to 16.5
Lead (Pb), % 0 to 0.0020
0
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 59 to 61
49 to 51
Tin (Sn), % 9.5 to 10.5
0
Zinc (Zn), % 0 to 0.0010
14.5 to 18.5
Residuals, % 0
0 to 0.15