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Solder Alloy 502 vs. AWS BNi-7

Solder alloy 502 belongs to the otherwise unclassified metals classification, while AWS BNi-7 belongs to the nickel alloys. There are 17 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 solder alloy 502 and the bottom bar is AWS BNi-7.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 53
170
Poisson's Ratio 0.36
0.3
Shear Modulus, GPa 19
67
Tensile Strength: Ultimate (UTS), MPa 58
550

Thermal Properties

Latent Heat of Fusion, J/g 66
280
Melting Completion (Liquidus), °C 350
890
Melting Onset (Solidus), °C 220
890
Specific Heat Capacity, J/kg-K 230
490
Thermal Expansion, µm/m-K 22
11

Otherwise Unclassified Properties

Density, g/cm3 7.4
8.0
Embodied Carbon, kg CO2/kg material 15
8.8
Embodied Energy, MJ/kg 260
120

Common Calculations

Stiffness to Weight: Axial, points 4.0
12
Stiffness to Weight: Bending, points 17
23
Strength to Weight: Axial, points 2.2
19
Strength to Weight: Bending, points 4.5
19
Thermal Shock Resistance, points 3.6
21

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.050
Antimony (Sb), % 0 to 0.1
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.080
0
Boron (B), % 0
0 to 0.010
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.060
Chromium (Cr), % 0
13 to 15
Cobalt (Co), % 0
0 to 0.1
Copper (Cu), % 3.5 to 4.5
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
0 to 0.2
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 0.040
Nickel (Ni), % 0 to 0.010
73.3 to 77.3
Phosphorus (P), % 0
9.7 to 10.5
Selenium (Se), % 0
0 to 0.0050
Silicon (Si), % 0
0 to 0.1
Silver (Ag), % 0.8 to 1.2
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 93.8 to 95.7
0
Titanium (Ti), % 0
0 to 0.050
Zinc (Zn), % 0 to 0.0010
0
Zirconium (Zr), % 0
0 to 0.050
Residuals, % 0
0 to 0.5