Solder Alloy 401 vs. AWS BAg-26

Both solder alloy 401 and AWS BAg-26 are otherwise unclassified metals. Both are furnished in the as-fabricated (no temper or treatment) condition. There are 17 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is solder alloy 401 and the bottom bar is AWS BAg-26.

ISO Solder Alloy 401 (IEC C7, Sn99.3Cu0.7)AWS BAg-26 (P07250) Filler Metal

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa		50
Elastic (Young's, Tensile) Modulus, GPa		98

Poisson's Ratio		0.36
Poisson's Ratio		0.32

Shear Modulus, GPa		19
Shear Modulus, GPa		37

Tensile Strength: Ultimate (UTS), MPa		29
Tensile Strength: Ultimate (UTS), MPa		160

Thermal Properties

Latent Heat of Fusion, J/g		60
Latent Heat of Fusion, J/g		160

Melting Completion (Liquidus), °C		230
Melting Completion (Liquidus), °C		800

Melting Onset (Solidus), °C		230
Melting Onset (Solidus), °C		710

Specific Heat Capacity, J/kg-K		220
Specific Heat Capacity, J/kg-K		350

Thermal Expansion, µm/m-K		22
Thermal Expansion, µm/m-K		21

Otherwise Unclassified Properties

Density, g/cm³		7.3
Density, g/cm³		8.5

Embodied Carbon, kg CO₂/kg material		15
Embodied Carbon, kg CO₂/kg material		26

Embodied Energy, MJ/kg		250
Embodied Energy, MJ/kg		410

Common Calculations

Stiffness to Weight: Axial, points		3.8
Stiffness to Weight: Axial, points		6.4

Stiffness to Weight: Bending, points		17
Stiffness to Weight: Bending, points		18

Strength to Weight: Axial, points		1.1
Strength to Weight: Axial, points		5.2

Strength to Weight: Bending, points		2.9
Strength to Weight: Bending, points		7.7

Thermal Shock Resistance, points		1.9
Thermal Shock Resistance, points		5.6

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

Copper (Cu), %		0.5 to 0.9
Copper (Cu), %		37 to 39

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

Manganese (Mn), %		0
Manganese (Mn), %		1.5 to 2.5

Nickel (Ni), %		0 to 0.010
Nickel (Ni), %		1.5 to 2.5

Silver (Ag), %		0 to 0.1
Silver (Ag), %		24 to 26

Tin (Sn), %		98.5 to 99.5
Tin (Sn), %		0

Zinc (Zn), %		0 to 0.0010
Zinc (Zn), %		31 to 35

Residuals, %		0
Residuals, %		0 to 0.15