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ASTM B780 Alloy vs. Solder Alloy 181

Both ASTM B780 alloy and solder alloy 181 are otherwise unclassified metals. There are 16 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 ASTM B780 alloy and the bottom bar is solder alloy 181.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 83
18
Elongation at Break, % 1.1 to 9.1
41
Poisson's Ratio 0.36
0.44
Shear Modulus, GPa 30
6.1
Tensile Strength: Ultimate (UTS), MPa 330 to 590
27

Thermal Properties

Latent Heat of Fusion, J/g 140
26
Specific Heat Capacity, J/kg-K 270
130
Thermal Expansion, µm/m-K 18
29

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 70 to 76
9.3
Electrical Conductivity: Equal Weight (Specific), % IACS 62 to 68
7.4

Otherwise Unclassified Properties

Density, g/cm3 10
11

Common Calculations

Stiffness to Weight: Axial, points 4.5
0.86
Stiffness to Weight: Bending, points 14
7.7
Strength to Weight: Axial, points 9.1 to 16
0.66
Strength to Weight: Bending, points 11 to 15
1.8
Thermal Shock Resistance, points 16 to 29
3.8

Alloy Composition

Aluminum (Al), % 0
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), % 23.5 to 25.7
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
96.2 to 98
Nickel (Ni), % 0.35 to 0.65
0 to 0.010
Silver (Ag), % 74 to 76
2.0 to 3.0
Tin (Sn), % 0
0 to 0.25
Zinc (Zn), % 0 to 0.060
0 to 0.0010