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Solder Alloy 103 vs. ASTM B631 Class A

Both solder alloy 103 and ASTM B631 class A are otherwise unclassified metals. There are 16 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 103 and the bottom bar is ASTM B631 class A.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 37
220
Poisson's Ratio 0.39
0.3
Shear Modulus, GPa 13
85 to 86

Thermal Properties

Latent Heat of Fusion, J/g 45
160
Melting Completion (Liquidus), °C 190
2680 to 2690
Specific Heat Capacity, J/kg-K 180
160
Thermal Conductivity, W/m-K 50
420
Thermal Expansion, µm/m-K 24
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
40 to 47
Electrical Conductivity: Equal Weight (Specific), % IACS 12
25 to 29

Otherwise Unclassified Properties

Density, g/cm3 8.9
15
Embodied Carbon, kg CO2/kg material 10
43
Embodied Energy, MJ/kg 180
670

Common Calculations

Stiffness to Weight: Axial, points 2.3
8.5
Stiffness to Weight: Bending, points 12
14
Thermal Diffusivity, mm2/s 30
180