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Monel 400, also known as Alloy 400, is a nickel-copper alloy known for its excellent corrosion resistance in a wide range of environments, including seawater, hydrofluoric acid, sulfuric acid, and alkalis. It also has good mechanical properties at sub-zero temperatures and up to 538°C (1000°F). Monel 400 is highly resistant to stress corrosion cracking and pitting in most fresh and industrial waters.
Chemical Composition:
Grade
Ni
Cu
Fe
Mn
Si
C
S
NO8825
63.0% minimum
28.0-34.0%
≤ 2.5%
≤ 2.0%
≤ 0.5%
≤ 0.3%
≤ 0.024%
Mechanical Properties:
Grade
Tensile Strength
Yield Strength
Elongation
Hardness
NO8825
550–620 MPa
(80,000–90,000 psi)
240–345 MPa
(35,000–50,000 psi)
35% minimum in
50 mm
65–80 HRB
(Rockwell Hardness B)
Key Features:
Corrosion Resistance: Excellent resistance to a wide range of corrosive environments, including acids, alkalis, and seawater.
Mechanical Properties: Good strength and toughness over a wide range of temperatures.
Stress Corrosion Cracking Resistance: High resistance to stress corrosion cracking and pitting.
Ductility: Retains ductility and toughness at sub-zero temperatures.
Weldability: Good weldability using conventional welding methods.
Applications:
1. Power Generation
Nuclear Power Plants: Used in nuclear power plant components exposed to aggressive cooling waters and corrosive environments.
Heat Exchangers: Suitable for heat exchangers in power plants due to its high thermal conductivity and corrosion resistance.
Steam Generators: Ideal for steam generators where high-performance materials are required.
2. Chemical Processing Industry
Heat Exchangers: Suitable for heat exchangers that handle corrosive chemicals, including hydrofluoric and sulfuric acids.
Reactors and Pressure Vessels: Used in reactors and pressure vessels dealing with highly corrosive substances.
Piping Systems: Ideal for piping systems transporting aggressive chemicals at various temperatures and pressures.
3. Pharmaceutical Industry
Processing Lines: Used in pharmaceutical processing lines that handle corrosive substances at various temperatures.
Sterilization Equipment: Suitable for sterilization equipment due to its excellent resistance to corrosive, high-temperature environments.
Storage Tanks: Ideal for storage tanks and containers exposed to aggressive chemicals.
Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n... Yuhong Holding Group has more than 35 years experience for pipeline products, till now we have 3 big joint venture factories, the total production area more than 130000 square meters, and more than 600 workers with 106 production lines give our clients excellent supporting always. &n...