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Monel 400 vs. Solder Alloy 121

Monel 400 belongs to the nickel alloys classification, while solder alloy 121 belongs to the otherwise unclassified metals. There are 24 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is Monel 400 and the bottom bar is solder alloy 121.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
21
Elongation at Break, % 20 to 40
25
Poisson's Ratio 0.32
0.43
Shear Modulus, GPa 62
7.5
Tensile Strength: Ultimate (UTS), MPa 540 to 780
32

Thermal Properties

Latent Heat of Fusion, J/g 270
29
Melting Completion (Liquidus), °C 1350
290
Melting Onset (Solidus), °C 1300
230
Specific Heat Capacity, J/kg-K 430
140
Thermal Conductivity, W/m-K 23
31
Thermal Expansion, µm/m-K 14
28

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.3
8.8
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 50
80
Density, g/cm3 8.9
11
Embodied Carbon, kg CO2/kg material 7.9
5.6
Embodied Energy, MJ/kg 110
93
Embodied Water, L/kg 250
580

Common Calculations

Stiffness to Weight: Axial, points 10
1.1
Stiffness to Weight: Bending, points 21
8.6
Strength to Weight: Axial, points 17 to 25
0.84
Strength to Weight: Bending, points 17 to 21
2.1
Thermal Diffusivity, mm2/s 6.1
20
Thermal Shock Resistance, points 17 to 25
3.9

Alloy Composition

Aluminum (Al), % 0
0 to 0.0010
Antimony (Sb), % 0
0 to 0.5
Arsenic (As), % 0
0 to 0.030
Bismuth (Bi), % 0
0 to 0.25
Cadmium (Cd), % 0
0 to 0.0050
Carbon (C), % 0 to 0.3
0
Copper (Cu), % 28 to 34
0 to 0.080
Gold (Au), % 0
0 to 0.050
Indium (In), % 0
0 to 0.1
Iron (Fe), % 0 to 2.5
0 to 0.020
Lead (Pb), % 0
83.4 to 85.5
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 63 to 72
0 to 0.010
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
0 to 0.1
Sulfur (S), % 0 to 0.024
0
Tin (Sn), % 0
14.5 to 15.5
Zinc (Zn), % 0
0 to 0.0010