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AWS BVAg-18 vs. AWS BAg-28

Both AWS BVAg-18 and AWS BAg-28 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 72% 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-28.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 82
88
Poisson's Ratio 0.36
0.33
Shear Modulus, GPa 30
33
Tensile Strength: Ultimate (UTS), MPa 180
150

Thermal Properties

Brazing Temperature, °C 720 to 840
680 to 840
Latent Heat of Fusion, J/g 140
140
Melting Completion (Liquidus), °C 720
710
Melting Onset (Solidus), °C 600
650
Specific Heat Capacity, J/kg-K 280
320
Thermal Expansion, µm/m-K 19
21

Otherwise Unclassified Properties

Density, g/cm3 9.7
8.9
Embodied Carbon, kg CO2/kg material 59
40
Embodied Energy, MJ/kg 930
630

Common Calculations

Stiffness to Weight: Axial, points 4.7
5.6
Stiffness to Weight: Bending, points 15
17
Strength to Weight: Axial, points 5.1
4.7
Strength to Weight: Bending, points 7.3
7.1
Thermal Shock Resistance, points 8.1
5.8

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 28.5 to 31.5
29 to 31
Lead (Pb), % 0 to 0.0020
0
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 59 to 61
39 to 41
Tin (Sn), % 9.5 to 10.5
1.5 to 2.5
Zinc (Zn), % 0 to 0.0010
26 to 30
Residuals, % 0
0 to 0.15