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AWS BAg-19 vs. AWS BAg-8

Both AWS BAg-19 and AWS BAg-8 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have 79% of their average alloy composition in common.

For each property being compared, the top bar is AWS BAg-19 and the bottom bar is AWS BAg-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 74
84
Poisson's Ratio 0.37
0.36
Shear Modulus, GPa 27
31
Tensile Strength: Ultimate (UTS), MPa 140
150

Thermal Properties

Brazing Temperature, °C 770 to 980
770 to 890
Latent Heat of Fusion, J/g 120
140
Melting Completion (Liquidus), °C 890
780
Melting Onset (Solidus), °C 760
780
Specific Heat Capacity, J/kg-K 250
280
Thermal Expansion, µm/m-K 20
19

Otherwise Unclassified Properties

Density, g/cm3 10
10

Common Calculations

Stiffness to Weight: Axial, points 4.0
4.6
Stiffness to Weight: Bending, points 14
14
Strength to Weight: Axial, points 3.8
4.1
Strength to Weight: Bending, points 5.8
6.2
Thermal Shock Resistance, points 6.9
6.7

Alloy Composition

Copper (Cu), % 6.6 to 7.9
26.9 to 29
Lithium (Li), % 0.15 to 0.3
0
Silver (Ag), % 92 to 93
71 to 73
Residuals, % 0
0 to 0.15