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Solder Alloy 401 vs. S20431 Stainless Steel

Solder alloy 401 belongs to the otherwise unclassified metals classification, while S20431 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 S20431 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 9.0
210
Elastic (Young's, Tensile) Modulus, GPa 50
200
Elongation at Break, % 21
46
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 19
76
Tensile Strength: Ultimate (UTS), MPa 29
710

Thermal Properties

Latent Heat of Fusion, J/g 60
280
Melting Completion (Liquidus), °C 230
1400
Melting Onset (Solidus), °C 230
1360
Specific Heat Capacity, J/kg-K 220
480
Thermal Conductivity, W/m-K 66
15
Thermal Expansion, µm/m-K 22
17

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
2.5
Embodied Energy, MJ/kg 250
36
Embodied Water, L/kg 1200
140

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 1.1
25
Strength to Weight: Bending, points 2.9
23
Thermal Diffusivity, mm2/s 40
4.0
Thermal Shock Resistance, points 1.9
15

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 0.12
Chromium (Cr), % 0
17 to 18
Copper (Cu), % 0.5 to 0.9
1.5 to 3.5
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
66.1 to 74.4
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
5.0 to 7.0
Nickel (Ni), % 0 to 0.010
2.0 to 4.0
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0
0 to 0.045
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