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AWS BAg-7 vs. AWS BVAu-7

Both AWS BAg-7 and AWS BVAu-7 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. 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 BVAu-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
130
Poisson's Ratio 0.34
0.38
Shear Modulus, GPa 31
45
Tensile Strength: Ultimate (UTS), MPa 150
200

Thermal Properties

Brazing Temperature, °C 650 to 900
1120 to 1150
Latent Heat of Fusion, J/g 130
140
Melting Completion (Liquidus), °C 650
1120
Melting Onset (Solidus), °C 620
1100
Specific Heat Capacity, J/kg-K 290
240
Thermal Expansion, µm/m-K 20
13

Otherwise Unclassified Properties

Density, g/cm3 9.3
15

Common Calculations

Stiffness to Weight: Axial, points 4.9
4.7
Stiffness to Weight: Bending, points 16
11
Strength to Weight: Axial, points 4.5
3.7
Strength to Weight: Bending, points 6.7
5.1
Thermal Shock Resistance, points 6.4
8.9

Alloy Composition

Cadmium (Cd), % 0
0 to 0.0010
Carbon (C), % 0
0 to 0.0050
Cobalt (Co), % 0
0 to 0.060
Copper (Cu), % 21 to 23
0
Gold (Au), % 0
49.5 to 50.5
Lead (Pb), % 0
0 to 0.0020
Nickel (Ni), % 0
24.5 to 25.5
Palladium (Pd), % 0
23.9 to 26
Phosphorus (P), % 0
0 to 0.0020
Silver (Ag), % 55 to 57
0
Tin (Sn), % 4.5 to 5.5
0
Zinc (Zn), % 15 to 19
0 to 0.0010
Residuals, % 0 to 0.15
0