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This alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas medium, and also has excellent corrosion resistance in hot concentrated lye. At the same time, it is also resistant to corrosion by neutral solutions, water, seawater, atmosphere, organic compounds, etc. An important feature of this alloy is that it generally does not produce stress corrosion cracking and has good machinability. It is a corrosion-resistant alloy with the largest amount, the most widely used and excellent comprehensive properties.
Alloy 400 is widely used in many fields, especially marine and chemical processing. Typical applications are pump and propeller shafts; marine fixtures and fasteners; electrical and electronic components; springs; chemical processing equipment; gasoline and fresh water tanks; crude petroleum stills,process vessels and piping; boiler feedwater heaters andother heat exchangers; and deaerating heaters.
Grade | C≤ | Mn≤ | Si | S≤ | Cu | Fe≤ | Ni≤ |
Monel400 | 0.3 | 2 | 0.5 | 0.024 | 28.0-34.0 | 2.5 | 63 |
Product Form | Condition | Tensile(Ksi) | .2% Yield (Ksi) | Elongation(%) | Hardness(HRB) |
Rod&Bar | Annealed | 75-90 | 25-50 | 60-35 | 60-80 |
Rod&Bar | Cold-Drawn Stress Relieved | 84-120 | 55-100 | 40-22 | 85-20HRC |
Plate | Annealed | 70-85 | 28-50 | 50-35 | 60-76 |
Sheet | Annealed | 70-85 | 30-45 | 45-35 | 65-80 |
Tube&Pipe Seamless | Annealed | 70-85 | 25-45 | 50-35 | 75 max* |
Pipe Smls | Pipe Welded | Tube Smls | Sheet/Plate | Bar | Forging | Fitting |
ASTM B165 | ASTM B474 | ASTM B163/B165 | ASTM B127 | ASTM B164 | ASTM B564 | ASTM B366 |
Monel 400 Equivalent Grades
STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
Monel 400 | 2.4360 | N04400 | NW 4400 | NA 13 | МНЖМц 28-2,5-1,5 | NU-30M | NiCu30Fe |
Monel 400 Applications：
Feed water and steam generator tubing
Brine heaters, sea water scrubbers in tanker inert gas systems
Sulfuric acid and hydrofluoric acid alkylation plants
Pickling bat heating coils
Heat exchangers in a variety of industries
Transfer piping from oil refinery crude columns
Plant for the refining of uranium and isotope separation in the production of nuclear fuel
Monoethanolamine (MEA) reboiling tube
Cladding for the upper areas of oil refinery crude columns
