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Solder Alloy 401 vs. S32550 Stainless Steel

Solder alloy 401 belongs to the otherwise unclassified metals classification, while S32550 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is solder alloy 401 and the bottom bar is S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 9.0
260
Elastic (Young's, Tensile) Modulus, GPa 50
200
Elongation at Break, % 21
21
Poisson's Ratio 0.36
0.27
Shear Modulus, GPa 19
80
Tensile Strength: Ultimate (UTS), MPa 29
860

Thermal Properties

Latent Heat of Fusion, J/g 60
300
Melting Completion (Liquidus), °C 230
1440
Melting Onset (Solidus), °C 230
1390
Specific Heat Capacity, J/kg-K 220
480
Thermal Conductivity, W/m-K 66
16
Thermal Expansion, µm/m-K 22
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 17
2.5

Otherwise Unclassified Properties

Density, g/cm3 7.3
7.8
Embodied Carbon, kg CO2/kg material 15
3.8
Embodied Energy, MJ/kg 250
53
Embodied Water, L/kg 1200
180

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 1.1
31
Strength to Weight: Bending, points 2.9
26
Thermal Diffusivity, mm2/s 40
4.4
Thermal Shock Resistance, points 1.9
23

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 0 to 0.1
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), % 0.5 to 0.9
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), % 0 to 0.070
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), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.030
Tin (Sn), % 98.5 to 99.5
0
Zinc (Zn), % 0 to 0.0010
0