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AWS BAg-8a vs. AWS BVAg-30

Both AWS BAg-8a and AWS BVAg-30 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 95% of their average alloy composition in common.

For each property being compared, the top bar is AWS BAg-8a and the bottom bar is AWS BVAg-30.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
86
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 31
31
Tensile Strength: Ultimate (UTS), MPa 150
170

Thermal Properties

Brazing Temperature, °C 720 to 870
810 to 930
Latent Heat of Fusion, J/g 140
140
Melting Completion (Liquidus), °C 770
810
Melting Onset (Solidus), °C 770
810
Specific Heat Capacity, J/kg-K 290
280
Thermal Expansion, µm/m-K 19
19

Otherwise Unclassified Properties

Density, g/cm3 10
10

Common Calculations

Stiffness to Weight: Axial, points 4.6
4.7
Stiffness to Weight: Bending, points 15
14
Strength to Weight: Axial, points 4.2
4.7
Strength to Weight: Bending, points 6.3
6.7
Thermal Shock Resistance, points 6.7
7.6

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Copper (Cu), % 26.4 to 28.8
25.5 to 28.5
Lead (Pb), % 0
0 to 0.0020
Lithium (Li), % 0.25 to 0.5
0
Palladium (Pd), % 0
4.5 to 5.5
Phosphorus (P), % 0
0 to 0.0020
Silver (Ag), % 71 to 73
67 to 69
Zinc (Zn), % 0
0 to 0.0010
Residuals, % 0 to 0.15
0