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Solder Alloy 811 vs. ASTM B477 Au-Ni-Ag

Both solder alloy 811 and ASTM B477 Au-Ni-Ag are otherwise unclassified metals. There are 18 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is solder alloy 811 and the bottom bar is ASTM B477 Au-Ni-Ag.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 52
95
Elongation at Break, % 38
5.5 to 11
Poisson's Ratio 0.35
0.41
Shear Modulus, GPa 19
34
Tensile Strength: Ultimate (UTS), MPa 53
310 to 550

Thermal Properties

Latent Heat of Fusion, J/g 63
80
Melting Completion (Liquidus), °C 200
1010
Melting Onset (Solidus), °C 190
930
Specific Heat Capacity, J/kg-K 230
160
Thermal Expansion, µm/m-K 22
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
14
Electrical Conductivity: Equal Weight (Specific), % IACS 17
7.5

Otherwise Unclassified Properties

Density, g/cm3 7.3
17

Common Calculations

Stiffness to Weight: Axial, points 4.0
3.1
Stiffness to Weight: Bending, points 17
8.9
Strength to Weight: Axial, points 2.0
5.0 to 9.0
Strength to Weight: Bending, points 4.3
6.0 to 8.8
Thermal Shock Resistance, points 3.3
16 to 28

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), % 2.8 to 3.2
0
Cadmium (Cd), % 0 to 0.0020
0
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
74.2 to 75.8
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
2.6 to 3.4
Silver (Ag), % 0 to 0.1
21.4 to 22.6
Tin (Sn), % 87.8 to 89.7
0
Zinc (Zn), % 7.5 to 8.5
0
Residuals, % 0
0 to 0.3