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ASTM B631 Class A vs. Solder Alloy 136

Both ASTM B631 class A and solder alloy 136 are otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (9, 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 136.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 220
25
Poisson's Ratio 0.3
0.42
Shear Modulus, GPa 85 to 86
8.9

Thermal Properties

Latent Heat of Fusion, J/g 160
34
Melting Completion (Liquidus), °C 2680 to 2690
260
Specific Heat Capacity, J/kg-K 160
150
Thermal Conductivity, W/m-K 420
40
Thermal Expansion, µm/m-K 11
27

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 40 to 47
9.2
Electrical Conductivity: Equal Weight (Specific), % IACS 25 to 29
8.0

Otherwise Unclassified Properties

Density, g/cm3 15
10
Embodied Carbon, kg CO2/kg material 43
6.8
Embodied Energy, MJ/kg 670
110

Common Calculations

Stiffness to Weight: Axial, points 8.5
1.4
Stiffness to Weight: Bending, points 14
9.5
Thermal Diffusivity, mm2/s 180
26