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Solder Alloy 181 vs. ASTM B631 Class C

Both solder alloy 181 and ASTM B631 class C are otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is solder alloy 181 and the bottom bar is ASTM B631 class C.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
180 to 190
Poisson's Ratio 0.44
0.32
Shear Modulus, GPa 6.1
66 to 71

Thermal Properties

Latent Heat of Fusion, J/g 26
140 to 150
Melting Completion (Liquidus), °C 310
2090 to 2230
Specific Heat Capacity, J/kg-K 130
180
Thermal Conductivity, W/m-K 24
450 to 490
Thermal Expansion, µm/m-K 29
14

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.3
55 to 63
Electrical Conductivity: Equal Weight (Specific), % IACS 7.4
36 to 43

Otherwise Unclassified Properties

Density, g/cm3 11
13 to 14
Embodied Carbon, kg CO2/kg material 6.2
55 to 59
Embodied Energy, MJ/kg 100
860 to 920

Common Calculations

Stiffness to Weight: Axial, points 0.86
7.4 to 7.6
Stiffness to Weight: Bending, points 7.7
14
Thermal Diffusivity, mm2/s 16
180 to 200