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Solder Alloy 301 vs. AWS BCo-1

Solder alloy 301 belongs to the otherwise unclassified metals classification, while AWS BCo-1 belongs to the cobalt alloys. There are 17 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is solder alloy 301 and the bottom bar is AWS BCo-1.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 40
200
Poisson's Ratio 0.34
0.3
Shear Modulus, GPa 15
78
Tensile Strength: Ultimate (UTS), MPa 55
700

Thermal Properties

Latent Heat of Fusion, J/g 55
420
Melting Completion (Liquidus), °C 140
1150
Melting Onset (Solidus), °C 140
1120
Specific Heat Capacity, J/kg-K 160
480
Thermal Expansion, µm/m-K 14
12

Otherwise Unclassified Properties

Density, g/cm3 8.7
8.1
Embodied Carbon, kg CO2/kg material 13
8.0
Embodied Energy, MJ/kg 210
110

Common Calculations

Stiffness to Weight: Axial, points 2.5
14
Stiffness to Weight: Bending, points 13
24
Strength to Weight: Axial, points 1.8
24
Strength to Weight: Bending, points 3.7
22
Thermal Shock Resistance, points 7.2
21

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.050
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 56.5 to 59
0
Boron (B), % 0
0.7 to 0.9
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0.35 to 0.45
Chromium (Cr), % 0
18 to 20
Cobalt (Co), % 0
46 to 54
Copper (Cu), % 0 to 0.050
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 1.0
Lead (Pb), % 0 to 0.070
0
Nickel (Ni), % 0 to 0.010
16 to 18
Phosphorus (P), % 0
0 to 0.020
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
7.5 to 8.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 41 to 43
0
Titanium (Ti), % 0
0 to 0.050
Tungsten (W), % 0
3.5 to 4.5
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5