ASTM B564 N04400 Monel 400 Weld neck Flange,Alloy 400 Blind Flanges ASME B16.5
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ASTM B564 UNS N04400 Monel 400 flanges are high-performance nickel-copper alloy forged flanges designed for corrosive and marine service environments. Manufactured in accordance with ASTM B564 and dimensional standard ASME B16.5, Monel 400 weld neck flanges and blind flanges offer excellent resistance to seawater corrosion, acids, and alkaline solutions, ensuring long-term reliability in critical piping systems.
The ASTM B564 specification covers nickel alloy flanges, including those made from UNS N04400 (nickel 400), which is a solid solution-strengthened nickel alloy known for its excellent resistance to a wide range of corrosive environments, particularly in marine and chemical industries.
ASTM B 564 UNS N04400 Flange
Monel 400 has a wonderful corrosion resistance by many reducing media such as sulfuric and hydrochloric acids. Generally, Monel 400 has a more resistantance to corrosion by oxidizing media than higher copper alloys. Monel 400 resists pitting and stress corrosion cracking in most fresh and industrial waters. It has good resistance in flowing seawater, but under stagnant conditions, pitting and crevice corrosion is induced. Monel 400 is probably the most resistant to hydrofluoric acid in all concentrations up to the boiling points.
Monel 400 UNS N04400 Chemical composition:
| Alloy | % | Ni | Cu | Fe | C | Mn | Si | S |
| Monel 400
UNS N04400 |
Min. | 63 | 28 | |||||
| Max. | 34 | 2.5 | 0.3 | 2 | 0.5 | 0.024 |
Monel 400 UNS N04400 Physical properties:
| Density | 8.83 g/cm³ |
| Melting point | 1300-1390 ℃ |
Monel 400 UNS N04400 Alloy minimum mechanical properties in the room temperature:
| Alloy state | Tensile strength Rm N/mm² | Yield strength R P0. 2 N/mm² |
Elongation A 5 % |
| Monel 400 | 480 | 170 | 35 |
ASTM B 564 UNS N04400 Specifications
| Pipe Smls | Pipe Welded | Tube Smls | Sheet/Plate | Bar | Forging | Fitting |
|---|---|---|---|---|---|---|
| B165 | B725 | B163 | B127 | B164 | B564 | B366 |
Heat Treatment
-
Condition: Solution Annealed
-
Temperature: 870 – 925°C (1600 – 1700°F)
-
Cooling: Air or water quench
The ASTM B564 UNS N04400 Weld Neck Flange is typically made of Alloy 400 (nickel), which is known for its excellent resistance to a wide range of corrosive environments, especially in seawater, sulfuric acid, and other acidic media. These flanges are commonly used in industries such as chemical processing, marine, and power generation.
- Material: Nickel (UNS N04400)
- Standard: ASTM B564 (covers forged or rolled flanges, forged fittings, and valves in nickel alloys)
- Flange Type: Weld Neck
- Common Applications: Suitable for high-temperature and high-pressure environments, including seawater systems, chemical processing, and other industrial applications.
Other Flange type available
Nickel alloy Flanges Types:
-Monel 400 UNS N04400 Welding Neck Flange(WNF)
-Monel 400 UNS N04400 Slip-on Flange(SOF)
-Monel 400 UNS N04400 Blind Flange
-Monel 400 UNS N04400 Plate Flange
Applications of Monel 400 Flanges
- Marine Engineering: Seawater piping, pump shafts, and offshore platform components.
- Chemical Processing: Reactors, valves, and heat exchangers handling sulfuric acid, chlorides, and solvents.
- Oil & Gas: Subsea equipment, refinery piping, and sour gas extraction systems.
- Aerospace: Hydraulic systems and fuel processing components.
- Power Generation: Heat recovery systems and nuclear reactor cooling circuit
Want to find a Monel 400 Weld neck Flanges manufactuer in China?
ASTM B564 UNS N04400 Monel 400 weld neck flanges and blind flanges are the ideal solution for marine and corrosive service piping systems. With full compliance to ASME B16.5, stable quality, and flexible size availability, these Alloy 400 flanges are supplied worldwide for oil & gas, chemical, and offshore applications.
Contact us today for pricing, technical support, and fast delivery of Monel 400 flanges.
Check and Download ASTM B564 UNS N04400 Monel 400 Flanges Specification
