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AWS BVAg-29 vs. Solder Alloy 721

Both AWS BVAg-29 and solder alloy 721 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 15 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-29 and the bottom bar is solder alloy 721.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 73
51
Poisson's Ratio 0.37
0.36
Shear Modulus, GPa 27
19
Tensile Strength: Ultimate (UTS), MPa 180
50

Thermal Properties

Latent Heat of Fusion, J/g 120
61
Melting Completion (Liquidus), °C 710
220
Melting Onset (Solidus), °C 620
210
Specific Heat Capacity, J/kg-K 270
220
Thermal Expansion, µm/m-K 20
22

Otherwise Unclassified Properties

Density, g/cm3 9.7
7.4

Common Calculations

Stiffness to Weight: Axial, points 4.2
3.8
Stiffness to Weight: Bending, points 14
17
Strength to Weight: Axial, points 5.2
1.9
Strength to Weight: Bending, points 7.3
4.1
Thermal Shock Resistance, points 8.8
3.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0.8 to 1.2
Cadmium (Cd), % 0 to 0.0010
0 to 0.0020
Carbon (C), % 0 to 0.0050
0
Copper (Cu), % 22.5 to 25.5
0.3 to 0.7
Gold (Au), % 0
0 to 0.050
Indium (In), % 14 to 15
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0 to 0.0020
0 to 0.070
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.0020
0
Silver (Ag), % 60.5 to 62.5
2.3 to 2.7
Tin (Sn), % 0
95 to 96.6
Zinc (Zn), % 0 to 0.0010
0 to 0.0010