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AWS BAg-7 vs. Solder Alloy 704

Both AWS BAg-7 and solder alloy 704 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 17 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AWS BAg-7 and the bottom bar is solder alloy 704.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
51
Poisson's Ratio 0.34
0.36
Shear Modulus, GPa 31
19
Tensile Strength: Ultimate (UTS), MPa 150
55

Thermal Properties

Latent Heat of Fusion, J/g 130
62
Melting Completion (Liquidus), °C 650
240
Melting Onset (Solidus), °C 620
220
Specific Heat Capacity, J/kg-K 290
220
Thermal Expansion, µm/m-K 20
22

Otherwise Unclassified Properties

Density, g/cm3 9.3
7.5
Embodied Carbon, kg CO2/kg material 55
19
Embodied Energy, MJ/kg 860
320

Common Calculations

Stiffness to Weight: Axial, points 4.9
3.8
Stiffness to Weight: Bending, points 16
17
Strength to Weight: Axial, points 4.5
2.1
Strength to Weight: Bending, points 6.7
4.3
Thermal Shock Resistance, points 6.4
3.5

Alloy Composition


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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 to 0.1
Cadmium (Cd), % 0
0 to 0.0020
Copper (Cu), % 21 to 23
0 to 0.050
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0
0 to 0.020
Lead (Pb), % 0
0 to 0.070
Nickel (Ni), % 0
0 to 0.010
Silver (Ag), % 55 to 57
4.8 to 5.2
Tin (Sn), % 4.5 to 5.5
94.3 to 95.2
Zinc (Zn), % 15 to 19
0 to 0.0010
Residuals, % 0 to 0.15
0