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ASTM B631 Class B vs. Solder Alloy 161

Both ASTM B631 class B and solder alloy 161 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 ASTM B631 class B and the bottom bar is solder alloy 161.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
38
Poisson's Ratio 0.31
0.39
Shear Modulus, GPa 78 to 79
14

Thermal Properties

Latent Heat of Fusion, J/g 150
48
Melting Completion (Liquidus), °C 2460 to 2480
190
Specific Heat Capacity, J/kg-K 170
190
Thermal Conductivity, W/m-K 450
49
Thermal Expansion, µm/m-K 12
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 50 to 53
11
Electrical Conductivity: Equal Weight (Specific), % IACS 32 to 34
11

Otherwise Unclassified Properties

Density, g/cm3 14
8.9
Embodied Carbon, kg CO2/kg material 49
11
Embodied Energy, MJ/kg 760
180

Common Calculations

Stiffness to Weight: Axial, points 8.1
2.4
Stiffness to Weight: Bending, points 14
13
Thermal Diffusivity, mm2/s 190
29