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ASTM B628 Ag-Cu vs. Solder Alloy 811

Both ASTM B628 Ag-Cu and solder alloy 811 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 811.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
52
Elongation at Break, % 1.1 to 17
38
Poisson's Ratio 0.36
0.35
Shear Modulus, GPa 31
19
Tensile Strength: Ultimate (UTS), MPa 350 to 760
53

Thermal Properties

Latent Heat of Fusion, J/g 140
63
Melting Completion (Liquidus), °C 780
200
Melting Onset (Solidus), °C 780
190
Specific Heat Capacity, J/kg-K 280
230
Thermal Expansion, µm/m-K 19
22

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 84
14
Electrical Conductivity: Equal Weight (Specific), % IACS 75
17

Otherwise Unclassified Properties

Density, g/cm3 10
7.3

Common Calculations

Stiffness to Weight: Axial, points 4.6
4.0
Stiffness to Weight: Bending, points 14
17
Strength to Weight: Axial, points 9.5 to 21
2.0
Strength to Weight: Bending, points 11 to 18
4.3
Thermal Shock Resistance, points 16 to 34
3.3

Alloy Composition


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Aluminum (Al), % 0 to 0.0050
0 to 0.0010
Antimony (Sb), % 0
0 to 0.1
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
2.8 to 3.2
Cadmium (Cd), % 0 to 0.050
0 to 0.0020
Copper (Cu), % 26.6 to 29
0 to 0.050
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
0 to 0.070
Nickel (Ni), % 0 to 0.010
0 to 0.010
Phosphorus (P), % 0 to 0.030
0
Silver (Ag), % 71 to 73
0 to 0.1
Tin (Sn), % 0
87.8 to 89.7
Zinc (Zn), % 0 to 0.060
7.5 to 8.5
Residuals, % 0 to 0.21
0