Monel 400 Forged Flange – Engineered Strength for Harsh Environments
The Monel 400 forged flange is a precision-engineered nickel–copper alloy component designed to deliver superior corrosion resistance, mechanical reliability, and service durability under extreme operating conditions.
Each flange is hot-forged from premium-grade Monel 400 billets, machined to tight tolerances, and inspected to meet international standards such as ASTM B564 and ASME SB564.
Engineers prefer Monel 400 due to its stability in seawater, acid, and alkali solutions, as well as its excellent thermal and mechanical performance across a wide temperature range.
Material Characteristics – Monel 400 (UNS N04400)
Monel 400 is a solid-solution nickel-copper alloy that combines strength, ductility, and outstanding corrosion resistance.
Unlike many stainless steels, it remains unaffected by seawater flow, salt spray, and alkaline environments, making it the alloy of choice for offshore, marine, and chemical systems.
Precision Forging and Machining Process
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Billet Heating:
Monel 400 billets are uniformly heated to 900–1150°C for optimum plasticity.
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Hot Forging:
Forged using hydraulic presses to refine grain flow and eliminate internal porosity.
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Heat Treatment:
Annealed at 870°C to achieve homogeneous microstructure and stress relief.
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CNC Machining:
Flange faces, sealing grooves, and bolt holes are machined with micron-level precision.
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Inspection & Testing:
100% ultrasonic, dimensional, and surface inspections ensure reliability in service.
Applications & Performance
This forged flange is widely used in:
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Marine and Offshore Equipment: Piping flanges for seawater systems and desalination plants
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Chemical Processing Units: Alkali production, heat exchangers, and condenser flanges
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Oil & Gas Industry: High-pressure and corrosion-resistant connectors
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Power & Energy Systems: Steam and condensate pipelines
Its long service life and minimal maintenance requirements make it a cost-effective choice for engineers and procurement managers seeking durable solutions in corrosive or high-temperature environments.
Mechanical Properties
| Property |
Typical Value |
| Material |
Monel 400 (UNS N04400) |
| Density |
8.8 g/cm³ |
| Tensile Strength |
480–550 MPa |
| Yield Strength |
≥170 MPa |
| Elongation |
≥35% |
| Hardness |
120–180 HB |
| Service Temperature |
-100°C ~ +550°C |
Monel 400 Chemical Compositions
| S |
C |
Cu |
Ni |
Si |
Mn |
Fe |
| 0.024 |
0.3 |
34 |
- |
0.5 |
2 |
2.5 |
| - |
- |
28 |
63 |
- |
- |
- |
Why Choose DINGSCO?
DINGSCO delivers high-performance nickel alloy forgings through advanced production techniques, including controlled hot forging, precision heat treatment, and CNC machining.
Our technical expertise and strict quality assurance ensure that every Monel 400 forged component meets global industrial demands for strength, corrosion resistance, and dimensional precision.
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