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Solder Alloy 401 vs. S44725 Stainless Steel

Solder alloy 401 belongs to the otherwise unclassified metals classification, while S44725 stainless steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is solder alloy 401 and the bottom bar is S44725 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 9.0
180
Elastic (Young's, Tensile) Modulus, GPa 50
200
Elongation at Break, % 21
22
Poisson's Ratio 0.36
0.27
Shear Modulus, GPa 19
81
Tensile Strength: Ultimate (UTS), MPa 29
500

Thermal Properties

Latent Heat of Fusion, J/g 60
290
Melting Completion (Liquidus), °C 230
1450
Melting Onset (Solidus), °C 230
1410
Specific Heat Capacity, J/kg-K 220
480
Thermal Conductivity, W/m-K 66
17
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 14
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 17
2.8

Otherwise Unclassified Properties

Density, g/cm3 7.3
7.7
Embodied Carbon, kg CO2/kg material 15
3.1
Embodied Energy, MJ/kg 250
44
Embodied Water, L/kg 1200
170

Common Calculations

Stiffness to Weight: Axial, points 3.8
15
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 1.1
18
Strength to Weight: Bending, points 2.9
18
Thermal Diffusivity, mm2/s 40
4.6
Thermal Shock Resistance, points 1.9
16

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 0.015
Chromium (Cr), % 0
25 to 28.5
Copper (Cu), % 0.5 to 0.9
0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
67.6 to 73.5
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 0.4
Molybdenum (Mo), % 0
1.5 to 2.5
Nickel (Ni), % 0 to 0.010
0 to 0.3
Niobium (Nb), % 0
0 to 0.26
Nitrogen (N), % 0
0 to 0.018
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0 to 0.040
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 98.5 to 99.5
0
Titanium (Ti), % 0
0 to 0.26
Zinc (Zn), % 0 to 0.0010
0