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ASTM B628 Ag-Cu vs. Solder Alloy 171

Both ASTM B628 Ag-Cu and solder alloy 171 are otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM B628 Ag-Cu and the bottom bar is solder alloy 171.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
38
Elongation at Break, % 1.1 to 17
45
Poisson's Ratio 0.36
0.39
Shear Modulus, GPa 31
14
Tensile Strength: Ultimate (UTS), MPa 350 to 760
48

Thermal Properties

Latent Heat of Fusion, J/g 140
47
Melting Completion (Liquidus), °C 780
180
Melting Onset (Solidus), °C 780
180
Specific Heat Capacity, J/kg-K 280
190
Thermal Expansion, µm/m-K 19
24

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
12
Electrical Conductivity: Equal Weight (Specific), % IACS 75
12

Otherwise Unclassified Properties

Density, g/cm3 10
8.8

Common Calculations

Stiffness to Weight: Axial, points 4.6
2.4
Stiffness to Weight: Bending, points 14
13
Strength to Weight: Axial, points 9.5 to 21
1.5
Strength to Weight: Bending, points 11 to 18
3.3
Thermal Shock Resistance, points 16 to 34
3.7

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.0010
Antimony (Sb), % 0
0 to 0.2
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.1
Cadmium (Cd), % 0 to 0.050
0 to 0.0020
Copper (Cu), % 26.6 to 29
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 0.050
0 to 0.020
Lead (Pb), % 0 to 0.030
34.7 to 36.7
Nickel (Ni), % 0 to 0.010
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silver (Ag), % 71 to 73
1.8 to 2.2
Tin (Sn), % 0
61.5 to 62.5
Zinc (Zn), % 0 to 0.060
0 to 0.0010
Residuals, % 0 to 0.21
0