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Solder Alloy 704 vs. AWS BAg-8

Both solder alloy 704 and AWS BAg-8 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 (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 704 and the bottom bar is AWS BAg-8.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 51
84
Poisson's Ratio 0.36
0.36
Shear Modulus, GPa 19
31
Tensile Strength: Ultimate (UTS), MPa 55
150

Thermal Properties

Latent Heat of Fusion, J/g 62
140
Melting Completion (Liquidus), °C 240
780
Melting Onset (Solidus), °C 220
780
Specific Heat Capacity, J/kg-K 220
280
Thermal Expansion, µm/m-K 22
19

Otherwise Unclassified Properties

Density, g/cm3 7.5
10

Common Calculations

Stiffness to Weight: Axial, points 3.8
4.6
Stiffness to Weight: Bending, points 17
14
Strength to Weight: Axial, points 2.1
4.1
Strength to Weight: Bending, points 4.3
6.2
Thermal Shock Resistance, points 3.5
6.7

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.050
26.9 to 29
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
0
Silver (Ag), % 4.8 to 5.2
71 to 73
Tin (Sn), % 94.3 to 95.2
0
Zinc (Zn), % 0 to 0.0010
0
Residuals, % 0
0 to 0.15