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AWS BAg-7 vs. AWS BAg-8

Both AWS BAg-7 and AWS BAg-8 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 78% of their average alloy composition in common. There are 16 material properties with values for both materials. Properties with values for just one material (2, 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-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
84
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 31
31
Tensile Strength: Ultimate (UTS), MPa 150
150

Thermal Properties

Brazing Temperature, °C 650 to 900
770 to 890
Latent Heat of Fusion, J/g 130
140
Melting Completion (Liquidus), °C 650
780
Melting Onset (Solidus), °C 620
780
Specific Heat Capacity, J/kg-K 290
280
Thermal Expansion, µm/m-K 20
19

Otherwise Unclassified Properties

Density, g/cm3 9.3
10

Common Calculations

Stiffness to Weight: Axial, points 4.9
4.6
Stiffness to Weight: Bending, points 16
14
Strength to Weight: Axial, points 4.5
4.1
Strength to Weight: Bending, points 6.7
6.2
Thermal Shock Resistance, points 6.4
6.7

Alloy Composition


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Copper (Cu), % 21 to 23
26.9 to 29
Silver (Ag), % 55 to 57
71 to 73
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 15 to 19
0
Residuals, % 0 to 0.15
0 to 0.15