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AWS BAg-7 vs. AWS BAg-9

Both AWS BAg-7 and AWS BAg-9 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a moderately high 91% 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-7 and the bottom bar is AWS BAg-9.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
82
Poisson's Ratio 0.34
0.35
Shear Modulus, GPa 31
31
Tensile Strength: Ultimate (UTS), MPa 150
140

Thermal Properties

Brazing Temperature, °C 650 to 900
720 to 840
Latent Heat of Fusion, J/g 130
130
Melting Completion (Liquidus), °C 650
720
Melting Onset (Solidus), °C 620
670
Specific Heat Capacity, J/kg-K 290
290
Thermal Expansion, µm/m-K 20
20

Otherwise Unclassified Properties

Density, g/cm3 9.3
9.6
Embodied Energy, MJ/kg 860
980

Common Calculations

Stiffness to Weight: Axial, points 4.9
4.8
Stiffness to Weight: Bending, points 16
15
Strength to Weight: Axial, points 4.5
4.1
Strength to Weight: Bending, points 6.7
6.3
Thermal Shock Resistance, points 6.4
6.0

Alloy Composition

Copper (Cu), % 21 to 23
19 to 21
Silver (Ag), % 55 to 57
64 to 66
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 15 to 19
13 to 17
Residuals, % 0 to 0.15
0 to 0.15