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AWS BAg-20 vs. AWS BAg-9

Both AWS BAg-20 and AWS BAg-9 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 65% of their average alloy composition in common. There are 17 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-20 and the bottom bar is AWS BAg-9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 93
82
Poisson's Ratio 0.32
0.35
Shear Modulus, GPa 35
31
Tensile Strength: Ultimate (UTS), MPa 160
140

Thermal Properties

Brazing Temperature, °C 770 to 900
720 to 840
Latent Heat of Fusion, J/g 150
130
Melting Completion (Liquidus), °C 770
720
Melting Onset (Solidus), °C 680
670
Specific Heat Capacity, J/kg-K 340
290
Thermal Expansion, µm/m-K 21
20

Otherwise Unclassified Properties

Density, g/cm3 8.6
9.6
Embodied Energy, MJ/kg 480
980

Common Calculations

Stiffness to Weight: Axial, points 6.0
4.8
Stiffness to Weight: Bending, points 17
15
Strength to Weight: Axial, points 5.1
4.1
Strength to Weight: Bending, points 7.6
6.3
Thermal Shock Resistance, points 5.9
6.0

Alloy Composition


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Copper (Cu), % 37 to 39
19 to 21
Silver (Ag), % 29 to 31
64 to 66
Zinc (Zn), % 30 to 34
13 to 17
Residuals, % 0 to 0.15
0 to 0.15