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Solder Alloy 201 vs. S31254 Stainless Steel

Solder alloy 201 belongs to the otherwise unclassified metals classification, while S31254 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 201 and the bottom bar is S31254 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 13
190
Elastic (Young's, Tensile) Modulus, GPa 50
200
Elongation at Break, % 38
40
Poisson's Ratio 0.35
0.28
Shear Modulus, GPa 19
80
Tensile Strength: Ultimate (UTS), MPa 41
720

Thermal Properties

Latent Heat of Fusion, J/g 64
300
Melting Completion (Liquidus), °C 240
1460
Melting Onset (Solidus), °C 240
1420
Specific Heat Capacity, J/kg-K 220
460
Thermal Conductivity, W/m-K 28
14
Thermal Expansion, µm/m-K 21
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 12
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 15
2.3

Otherwise Unclassified Properties

Density, g/cm3 7.3
8.0
Embodied Carbon, kg CO2/kg material 15
5.5
Embodied Energy, MJ/kg 250
74
Embodied Water, L/kg 1320
190

Common Calculations

Stiffness to Weight: Axial, points 3.8
14
Stiffness to Weight: Bending, points 17
24
Strength to Weight: Axial, points 1.6
25
Strength to Weight: Bending, points 3.6
22
Thermal Diffusivity, mm2/s 17
3.8
Thermal Shock Resistance, points 2.7
15

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0
Antimony (Sb), % 4.5 to 5.5
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 0.020
Chromium (Cr), % 0
19.5 to 20.5
Copper (Cu), % 0 to 0.050
0.5 to 1.0
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
51.4 to 56.3
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 1.0
Molybdenum (Mo), % 0
6.0 to 6.5
Nickel (Ni), % 0 to 0.010
17.5 to 18.5
Nitrogen (N), % 0
0.18 to 0.22
Phosphorus (P), % 0
0 to 0.030
Silicon (Si), % 0
0 to 0.8
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.010
Tin (Sn), % 94 to 95.5
0
Zinc (Zn), % 0 to 0.0010
0