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Solder Alloy 402 vs. S44800 Stainless Steel

Solder alloy 402 belongs to the otherwise unclassified metals classification, while S44800 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 402 and the bottom bar is S44800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 52
210
Elongation at Break, % 20
23
Poisson's Ratio 0.36
0.27
Shear Modulus, GPa 19
82
Tensile Strength: Ultimate (UTS), MPa 57
590

Thermal Properties

Latent Heat of Fusion, J/g 64
300
Melting Completion (Liquidus), °C 310
1460
Melting Onset (Solidus), °C 230
1410
Specific Heat Capacity, J/kg-K 230
480
Thermal Conductivity, W/m-K 61
17
Thermal Expansion, µm/m-K 22
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 15
2.6
Electrical Conductivity: Equal Weight (Specific), % IACS 18
3.0

Otherwise Unclassified Properties

Density, g/cm3 7.3
7.8
Embodied Carbon, kg CO2/kg material 15
3.8
Embodied Energy, MJ/kg 250
52
Embodied Water, L/kg 1180
190

Common Calculations

Stiffness to Weight: Axial, points 3.9
15
Stiffness to Weight: Bending, points 17
25
Strength to Weight: Axial, points 2.2
21
Strength to Weight: Bending, points 4.5
20
Thermal Diffusivity, mm2/s 37
4.6
Thermal Shock Resistance, points 3.6
19

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 0.010
Chromium (Cr), % 0
28 to 30
Copper (Cu), % 2.5 to 3.5
0 to 0.15
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
62.6 to 66.5
Lead (Pb), % 0 to 0.070
0
Manganese (Mn), % 0
0 to 0.3
Molybdenum (Mo), % 0
3.5 to 4.2
Nickel (Ni), % 0 to 0.010
2.0 to 2.5
Nitrogen (N), % 0
0 to 0.020
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.2
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.020
Tin (Sn), % 95.9 to 97.5
0
Zinc (Zn), % 0 to 0.0010
0