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ASTM B631 Class C vs. Solder Alloy 181

Both ASTM B631 class C and solder alloy 181 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 ASTM B631 class C and the bottom bar is solder alloy 181.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Electrical Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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