Hunan Dinghan New Material Technology Co., LTD
                                                                                                           
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Monel 400 Forged Flange - Corrosion Resistant Nickel-Copper Alloy Flange for Marine Engineering

Price Negotiable
Price: Negotiable
MOQ: Negotiable
Delivery Time: (Sample order) 7 days
Brand: DINGSCO
Product Description
Monel 400 Forged Flange
Manufactured in accordance with ASTM B564 UNS N04400 from high-quality nickel-copper alloy billets, these forged flanges are engineered for exceptional resistance to seawater, hydrofluoric acid, and alkaline environments. As professional forging manufacturers, we produce heavy-wall and large-diameter Monel 400 flanges for demanding marine, offshore, and chemical processing systems where corrosion resistance and mechanical reliability are critical.

Material Advantages - Monel 400 Alloy
Monel 400 is a solid-solution alloy composed primarily of nickel and copper, making it highly resistant to a wide range of corrosive environments. It maintains outstanding strength, ductility, and stability under both cryogenic and elevated temperatures.
Main Characteristics:
  • Excellent corrosion resistance in marine and alkaline environments
  • High toughness and durability at both low and high temperatures
  • Resistance to stress corrosion cracking and cavitation
  • Suitable for hot forming, welding, and machining

Performance Advantages
  • Room Temperature Strength: Tensile strength approximately 30% higher than 304 stainless steel
  • Low-Temperature Toughness: Impact energy >75 J at -196°C, no brittle fracture risk; suitable for LNG storage and transportation equipment
  • High-Temperature Performance: Maximum continuous service temperature approximately 600°C in air; corrosion rate <0.026 mm/a in high-temperature steam

Production Process Flow
VIM Vacuum Induction Melting → ESR Electroslag Remelting → Forging Breakdown → Ring Rolling → Solution Heat Treatment → Machining → NDT → Surface Finishing
Material Properties
Property Typical Value
Material Monel 400 (UNS N04400)
Density 8.8 g/cm³
Tensile Strength ≥480 MPa
Yield Strength ≥170 MPa
Elongation ≥35%
Hardness 120-180 HB
Working Temperature -100°C to +550°C
Applications
Offshore & Marine Systems
Seawater pumps, condensers, and heat exchangers
Chemical & Petrochemical Plants
Alkali production, acid handling pipelines, reactor connectors
Power Generation
Condenser tubes and corrosion-resistant fittings
Desalination & Water Treatment
Corrosion-resistant equipment components
Monel 400 Chemical Composition
S C Cu Ni Si Mn Fe
0.024 0.3 34 - 0.5 2 2.5
- - 28 63 - - -
Material Comparison
Monel 400: More suitable for seawater and alkaline environments
Inconel 625: More suitable for mixed environments of high intensity and high corrosion

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Hunan Dinghan New Material Technology Co., LTD
Location No. 2319, Building 2, Dongfang Furong Garden, No. 582 Yuanda 1st Road, Hehuayuan Street,Furong District, Changsha, Hunan Province, China.
Contact Person Julia Wang

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