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Solder Alloy 123 vs. EN 1.4903 Stainless Steel

Solder alloy 123 belongs to the otherwise unclassified metals classification, while EN 1.4903 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 123 and the bottom bar is EN 1.4903 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 18
190
Elongation at Break, % 45
20 to 21
Poisson's Ratio 0.44
0.28
Shear Modulus, GPa 6.2
75
Tensile Strength: Ultimate (UTS), MPa 28
670 to 680

Thermal Properties

Latent Heat of Fusion, J/g 26
270
Melting Completion (Liquidus), °C 310
1460
Melting Onset (Solidus), °C 300
1420
Specific Heat Capacity, J/kg-K 130
470
Thermal Conductivity, W/m-K 23
26
Thermal Expansion, µm/m-K 29
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 8.8
3.4
Electrical Conductivity: Equal Weight (Specific), % IACS 7.1
4.0

Otherwise Unclassified Properties

Base Metal Price, % relative 75
7.0
Density, g/cm3 11
7.8
Embodied Carbon, kg CO2/kg material 4.5
2.6
Embodied Energy, MJ/kg 74
36
Embodied Water, L/kg 500
88

Common Calculations

Stiffness to Weight: Axial, points 0.9
14
Stiffness to Weight: Bending, points 7.8
25
Strength to Weight: Axial, points 0.69
24
Strength to Weight: Bending, points 1.8
22
Thermal Diffusivity, mm2/s 16
7.0
Thermal Shock Resistance, points 3.8
23

Alloy Composition

Aluminum (Al), % 0 to 0.0010
0 to 0.040
Antimony (Sb), % 0 to 0.5
0
Arsenic (As), % 0 to 0.030
0
Bismuth (Bi), % 0 to 0.1
0
Cadmium (Cd), % 0 to 0.0050
0
Carbon (C), % 0
0.080 to 0.12
Chromium (Cr), % 0
8.0 to 9.5
Copper (Cu), % 0 to 0.080
0 to 0.3
Gold (Au), % 0 to 0.050
0
Indium (In), % 0 to 0.1
0
Iron (Fe), % 0 to 0.020
87.1 to 90.5
Lead (Pb), % 93.5 to 95.5
0
Manganese (Mn), % 0
0.3 to 0.6
Molybdenum (Mo), % 0
0.85 to 1.1
Nickel (Ni), % 0 to 0.010
0 to 0.4
Niobium (Nb), % 0
0.060 to 0.1
Nitrogen (N), % 0
0.030 to 0.070
Phosphorus (P), % 0
0 to 0.025
Silicon (Si), % 0
0 to 0.5
Silver (Ag), % 0 to 0.1
0
Sulfur (S), % 0
0 to 0.015
Tin (Sn), % 4.5 to 5.5
0
Vanadium (V), % 0
0.18 to 0.25
Zinc (Zn), % 0 to 0.0010
0