Solder Alloy 142 vs. AWS BVPd-1

Both solder alloy 142 and AWS BVPd-1 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 15 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is solder alloy 142 and the bottom bar is AWS BVPd-1.

ISO Solder Alloy 142 (Pb49Sn48Bi3)AWS BVPd-1 (P03657) Vacuum Service Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		33
Elastic (Young's, Tensile) Modulus, GPa		150

Poisson's Ratio		0.4
Poisson's Ratio		0.37

Shear Modulus, GPa		12
Shear Modulus, GPa		56

Tensile Strength: Ultimate (UTS), MPa		43
Tensile Strength: Ultimate (UTS), MPa		240

Thermal Properties

Latent Heat of Fusion, J/g		42
Latent Heat of Fusion, J/g		200

Melting Completion (Liquidus), °C		210
Melting Completion (Liquidus), °C		1240

Melting Onset (Solidus), °C		180
Melting Onset (Solidus), °C		1230

Specific Heat Capacity, J/kg-K		170
Specific Heat Capacity, J/kg-K		310

Thermal Expansion, µm/m-K		25
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		9.3
Density, g/cm³		11

Common Calculations

Stiffness to Weight: Axial, points		2.0
Stiffness to Weight: Axial, points		7.7

Stiffness to Weight: Bending, points		11
Stiffness to Weight: Bending, points		16

Strength to Weight: Axial, points		1.3
Strength to Weight: Axial, points		6.1

Strength to Weight: Bending, points		2.9
Strength to Weight: Bending, points		7.9

Thermal Shock Resistance, points		3.7
Thermal Shock Resistance, points		9.8

Alloy Composition

Aluminum (Al), %		0 to 0.0010
Aluminum (Al), %		0

Antimony (Sb), %		0 to 0.2
Antimony (Sb), %		0

Arsenic (As), %		0 to 0.030
Arsenic (As), %		0

Bismuth (Bi), %		2.5 to 3.5
Bismuth (Bi), %		0

Cadmium (Cd), %		0 to 0.0020
Cadmium (Cd), %		0 to 0.0010

Carbon (C), %		0
Carbon (C), %		0 to 0.0050

Cobalt (Co), %		0
Cobalt (Co), %		33.9 to 36

Copper (Cu), %		0 to 0.080
Copper (Cu), %		0

Gold (Au), %		0 to 0.050
Gold (Au), %		0

Indium (In), %		0 to 0.1
Indium (In), %		0

Iron (Fe), %		0 to 0.020
Iron (Fe), %		0

Lead (Pb), %		47.4 to 50
Lead (Pb), %		0 to 0.0020

Nickel (Ni), %		0 to 0.010
Nickel (Ni), %		0 to 0.060

Palladium (Pd), %		0
Palladium (Pd), %		64 to 66

Phosphorus (P), %		0
Phosphorus (P), %		0 to 0.0020

Silver (Ag), %		0 to 0.1
Silver (Ag), %		0

Tin (Sn), %		47.5 to 48.5
Tin (Sn), %		0

Zinc (Zn), %		0 to 0.0010
Zinc (Zn), %		0 to 0.0010