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Solder Alloy 171 vs. S32550 Stainless Steel

Solder alloy 171 belongs to the otherwise unclassified metals classification, while S32550 stainless steel belongs to the iron alloys. There are 23 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is solder alloy 171 and the bottom bar is S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 16
260
Elastic (Young's, Tensile) Modulus, GPa 38
200
Elongation at Break, % 45
21
Poisson's Ratio 0.39
0.27
Shear Modulus, GPa 14
80
Tensile Strength: Ultimate (UTS), MPa 48
860

Thermal Properties

Latent Heat of Fusion, J/g 47
300
Melting Completion (Liquidus), °C 180
1440
Melting Onset (Solidus), °C 180
1390
Specific Heat Capacity, J/kg-K 190
480
Thermal Conductivity, W/m-K 50
16
Thermal Expansion, µm/m-K 24
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 12
2.5

Otherwise Unclassified Properties

Density, g/cm3 8.8
7.8
Embodied Carbon, kg CO2/kg material 13
3.8
Embodied Energy, MJ/kg 210
53

Common Calculations

Stiffness to Weight: Axial, points 2.4
14
Stiffness to Weight: Bending, points 13
25
Strength to Weight: Axial, points 1.5
31
Strength to Weight: Bending, points 3.3
26
Thermal Diffusivity, mm2/s 30
4.4
Thermal Shock Resistance, points 3.7
23

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.2
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0020
0
Carbon (C), % 0
0 to 0.040
Chromium (Cr), % 0
24 to 27
Copper (Cu), % 0 to 0.080
1.5 to 2.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
57.2 to 67
Lead (Pb), % 34.7 to 36.7
0
Manganese (Mn), % 0
0 to 1.5
Molybdenum (Mo), % 0
2.9 to 3.9
Nickel (Ni), % 0 to 0.010
4.5 to 6.5
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Silver (Ag), % 1.8 to 2.2
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 61.5 to 62.5
0
Zinc (Zn), % 0 to 0.0010
0