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Solder Alloy 181 vs. ASTM B780 Alloy

Both solder alloy 181 and ASTM B780 alloy 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 solder alloy 181 and the bottom bar is ASTM B780 alloy.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 11
10

Common Calculations

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

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0 to 0.050
Copper (Cu), % 0 to 0.080
23.5 to 25.7
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.050
Lead (Pb), % 96.2 to 98
0 to 0.030
Nickel (Ni), % 0 to 0.010
0.35 to 0.65
Silver (Ag), % 2.0 to 3.0
74 to 76
Tin (Sn), % 0 to 0.25
0
Zinc (Zn), % 0 to 0.0010
0 to 0.060