Solder Alloy 703 vs. AWS BVPd-1

Both solder alloy 703 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 703 and the bottom bar is AWS BVPd-1.

ISO Solder Alloy 703 (IEC A35, Sn96.5Ag3.5)AWS BVPd-1 (P03657) Vacuum Service Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		51
Elastic (Young's, Tensile) Modulus, GPa		150

Poisson's Ratio		0.36
Poisson's Ratio		0.37

Shear Modulus, GPa		19
Shear Modulus, GPa		56

Tensile Strength: Ultimate (UTS), MPa		57
Tensile Strength: Ultimate (UTS), MPa		240

Thermal Properties

Latent Heat of Fusion, J/g		61
Latent Heat of Fusion, J/g		200

Melting Completion (Liquidus), °C		220
Melting Completion (Liquidus), °C		1240

Melting Onset (Solidus), °C		220
Melting Onset (Solidus), °C		1230

Specific Heat Capacity, J/kg-K		220
Specific Heat Capacity, J/kg-K		310

Thermal Expansion, µm/m-K		22
Thermal Expansion, µm/m-K		12

Otherwise Unclassified Properties

Density, g/cm³		7.4
Density, g/cm³		11

Common Calculations

Stiffness to Weight: Axial, points		3.8
Stiffness to Weight: Axial, points		7.7

Stiffness to Weight: Bending, points		17
Stiffness to Weight: Bending, points		16

Strength to Weight: Axial, points		2.1
Strength to Weight: Axial, points		6.1

Strength to Weight: Bending, points		4.4
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 0.1
Antimony (Sb), %		0

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

Bismuth (Bi), %		0 to 0.1
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 0.050
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), %		0 to 0.070
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), %		3.3 to 3.7
Silver (Ag), %		0

Tin (Sn), %		95.8 to 96.7
Tin (Sn), %		0

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