Monel400 is a nickel-copper solid solution strengthened alloy. The alloy is characterized by moderate strength, good weldability, good general corrosion resistance and toughness. It is useful at temperatures up to 1000°F (538°C). Alloy 400 has excellent resistance to rapidly flowing brackish or seawater where cavitation and erosion resistance is necessary. It is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. Alloy 400 is slightly magnetic at room temperature.
Alloy |
% |
Ni |
Fe |
C |
Mn |
Si |
S |
Cu |
Monel 400 |
Min. |
63 | - | - | - | - | - | 28.0 |
Max. |
- |
2.5 |
0.3 | 2.0 | 0.5 | 0.24 | 34.0 |
Density
|
8.83 g/cm³
|
Melting point
|
1300-1390 ℃
|
Status
|
Tensile strength
Rm N/mm² |
Yield strength
Rp 0. 2N/mm² |
Elongation
As % |
Brinell hardness
HB
|
Solution treatment
|
480
|
170 | 35 | 135 -179 |
ASTM B127/ASME SB-127, ASTM B163/ASME SB-163, ASTM B165/ASME SB-165
Bar/Rod | Forging | Strip/Coil | Sheet/Plate | Pipe/Tube |
ASTM B164 | ASTM B564 | ASTM B127 | ASTM B163/ASME SB-163, ASTM B165/ASME SB-165 |
• Resistant to seawater and steam at high temperatures
• Excellent resistance to rapidly flowing brackish water or seawater
• Excellent resistance to stress corrosion cracking in most freshwaters
• Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated
• Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations, but is seldom the material of choice for these acids
• Excellent resistance to neutral and alkaline salt
• Resistance to chloride induced stress corrosion cracking
• Good mechanical properties from sub-zero temperatures up to 1020° F
• High resistance to alkalis
• Marine engineering
• Chemical and hydrocarbon processing equipment
• Gasoline and freshwater tanks
• Crude petroleum stills
• De-aerating heaters
• Boiler feed water heaters and other heat exchangers
• Valves, pumps, shafts, fittings, and fasteners
• Industrial heat exchangers
• Chlorinated solvents
• Crude oil distillation towers