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ASTM B631 Class A vs. Solder Alloy 102

Both ASTM B631 class A and solder alloy 102 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 A and the bottom bar is solder alloy 102.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
38
Poisson's Ratio 0.3
0.39
Shear Modulus, GPa 85 to 86
14

Thermal Properties

Latent Heat of Fusion, J/g 160
46
Melting Completion (Liquidus), °C 2680 to 2690
180
Specific Heat Capacity, J/kg-K 160
190
Thermal Conductivity, W/m-K 420
53
Thermal Expansion, µm/m-K 11
25

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
12
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
13

Otherwise Unclassified Properties

Density, g/cm3 15
8.8
Embodied Carbon, kg CO2/kg material 43
11
Embodied Energy, MJ/kg 670
180

Common Calculations

Stiffness to Weight: Axial, points 8.5
2.4
Stiffness to Weight: Bending, points 14
13
Thermal Diffusivity, mm2/s 180
32