Monel Flanges

Monel Flanges are flanges made of high-strength, corrosion-resistant nickel-copper alloy, mainly including Monel 400 and Monel K500. They have excellent resistance to seawater and various acid and alkali corrosion, mechanical strength and high temperature performance.

Monel Flanges are suitable for applications in marine engineering, chemical processing, oil and gas, aerospace and power generation. Characteristics include good workability and weldability, hot working temperatures of 2100°F and no less than 1700°F, and cold working that hardens significantly but provides good ductility. Recommendations for use include using low speed, high feed rate machining methods and chip breakers, and heat treating after welding to maintain optimal performance. Although caution is required when used in high temperatures and sulfur-containing environments, its high strength, corrosion resistance and diverse applications make it ideal for a variety of industries.

  • Weld Neck / Socket Weld / Blind Flange / Threaded
  • Pressure Class: 150 to 2500
  • Non-Destructive Testing
  • Support Customize Size & Shapes
  • Free Sample
  • Corrosion Resistance/High Strength/Good Processability
  • ASTM/ASME/ISO/DIN Certified
  • Factory Price
  • Loading Port: Shanghai, Tianjin, Qingdao
  • 30-50 Days, 7 Days For Stock Goods
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Gnee supplies Different Types Of Monel Flanges

As a leading manufacturer and supplier of steel products, Gnee supplies a variety of types of Monel flanges with rich product sizes that can be processed and customized according to customers’ specific size requirements. Our products are widely used in fields such as petrochemical, energy generation, chemical engineering, aerospace and marine engineering. Not limited to the following types, if you have any needs, please feel free to contact us!
More information about Monel Alloy Flanges
Product NameMonel Flanges
Size1/2”- 60”
Standard SpecificationASTM, DIN, SUS, AISI, SAE, ANSI, ASME, EN, JIS, BS, GB, UNS
Flanges Face TypeRaised Face (RF), Flat Face(FF), Ring-Type Joint (RTJ), Tongue-and-Groove (T&G), Male-and-Female (M&F)
Class150#, 300#, 600#, 900#, 1500#, 2500#
PressurePN6, PN10, PN16, PN25, PN40, PN64
Test CertificateUnder Third-Party Inspection
Manufacturer Test Certificate
Packaging DetailsStandard Export Seaworthy Packing Or As Required
Petrochemical Industry– Refineries
– Chemical Plants
– Gas and Oil Pipelines
Power Generation– Thermal Power Plants
– Nuclear Power Plants
– Renewable Energy
Chemical Processing– Pharmaceutical Industry
– Agrochemicals and Fertilizers
– Specialty Chemicals
Aerospace and Defense– Aircraft Engines
– Gas Turbines
– Defense Equipment
Marine and Offshore Industry– Offshore Oil and Gas
– Shipbuilding
– Desalination Plants
Heat Exchangers and Boiler Systems– Heat Exchangers
– Boiler Systems
Environmental and Waste Treatment– Wastewater Treatment Plants
– Air Pollution Control Systems
Monel Flanges Manufacturer With Rich Grades
  • Monel 400 (UNS N04400, EN 2.4360)
  • Monel K500 (UNS N05500, EN 2.4375)
  • Monel 401 (UNS N04401, EN 2.4365)
  • Monel 404 (UNS N04404, EN 2.4366)
  • Monel R405 (UNS N04405, EN 2.4370)
ASTMASTM B564/B564 M, ASTM B462/B462M, ASTM B366/B366M
Parameters Of Monel Steel Flanges
ElementMonel 400 (UNS N04400)Monel K500 (UNS N05500)
Nickel (Ni)63.0 – 70.0%63.0 – 70.0%
Copper (Cu)28.0 – 34.0%27.0 – 33.0%
Iron (Fe)≤ 2.5%≤ 2.0%
Manganese (Mn)≤ 2.0%≤ 1.5%
Carbon (C)≤ 0.3%≤ 0.25%
Silicon (Si)≤ 0.5%≤ 0.5%
Sulfur (S)≤ 0.024%≤ 0.01%
Aluminum (Al)2.3 – 3.15%
Titanium (Ti)0.35 – 0.85%
PropertyMonel 400 (UNS N04400)Monel K500 (UNS N05500)
Tensile Strength (MPa)550 – 620965
Yield Strength (MPa)240690
Elongation (%)3020
Hardness (Rockwell B)65 – 8080 – 90
Impact Strength (J)HighHigh
PropertyMonel 400 (UNS N04400)Monel K500 (UNS N05500)
Density (g/cm³)8.88.44
Melting Point (°C)1350 – 13901350 – 1390
Electrical Conductivity (% IACS)3414
Thermal Conductivity (W/m·K)21.817
Coefficient of Expansion (µm/m·K)13.913.3
Why Choose Gnee Monel Flanges Manufacturer?

Gnee, as a Chinese stainless steel & nickel alloy supplier with 15 years of history, exports to 60+ countries. We provide various shapes of stainless steel & nickel alloy, including plates, coils, pipes, bars, and fittings. Gnee is committed to providing comprehensive stainless steel solutions, with excellent after-sales service, we support customization and ensure product quality.

In addition, our steel plate has been successfully exported to more than 60 countries such as Singapore, Malaysia, The United Arab Emirates, Oman, Turkey, Nigeria, Egypt, Kuwait, Indonesia, Qatar, and Kenya. Many regular customers come to visit our company and factory and make multiple orders.

What‘s The Feature Of Monel Flanges?

Monel Flanges exhibit exceptional resistance to corrosion in various harsh environments, including seawater, acids, alkalis, and chemical solutions. They are highly resistant to pitting, crevice corrosion, and stress corrosion cracking, making them ideal for applications in marine, chemical, and oil and gas industries.

Monel Flanges offer excellent mechanical strength, allowing them to withstand high-pressure and high-stress environments. They provide reliable and secure connections in demanding applications where strength and integrity are critical.

Monel Flanges maintain their mechanical properties and corrosion resistance at elevated temperatures. They can withstand high-temperature environments without significant loss of strength or degradation, making them suitable for applications involving heat and thermal cycling.

Monel Flanges are designed to provide excellent sealing capability when used with gaskets or seals. They ensure leak-free connections, minimizing the risk of fluid or gas leakage in piping systems.

What Services Does Gnee Provide?

Gnee can provide the following measurement services for stainless steel:

Dimensional Measurement: Measure dimensional parameters such as length, width and thickness by measuring instruments to ensure that the stainless steel is qualified and meets the design requirements.
Surface Measurement: Measure parameters such as flatness, bumpiness and surface roughness of the stainless steel surface to help ensure that the quality and surface condition of the stainless steel meets the requirements.
Thickness Measurement: Use thickness gauges to accurately measure the thickness of the stainless steel to ensure it meets the design requirements.
Material Measurement: Use material analysis instruments to measure the chemical composition and mechanical properties of the stainless steel to ensure that the quality and properties of the stainless steel meet the requirements.
Bending And Deformation Measurements: Use tools such as bending gauges and displacement sensors to measure and monitor the degree of bending and deformation of stainless steel to ensure that it is within the allowable range.

Ask Measurement service

Gnee can customize the size and shape of your stainless steel for your specific project needs. Custom design of stainless steel is carried out by a team of professional engineers and designers. Based on the project requirements and constraints, they will use calculation and simulation tools combined with experience and technical knowledge to optimize the stainless steel design to meet the specific needs of your different projects

● Adjustment of the thickness, width and length of stainless steel based on load calculations and strength requirements for structural design.
● The shape of the stainless steel can be designed according to the demand characteristics.
● If the convenience of installation and maintenance is considered, we can also add openings and passages for easy access and operation in the design for areas that require frequent maintenance.

Ask Customized Services

Sourcing Gnee stainless steel can provide the following further processing services. We can customize to meet the specific needs of our customers for different projects.

Cutting Service: Stainless steel can be custom cut to obtain the desired shape and size according to the customer’s needs. For example, flame cutting, plasma cutting, laser cutting, etc., can cut stainless steel into desired plates, blocks, shaped pieces, etc.
Bending & Forming: Stainless steel is bent and formed by applying stress and appropriate processes to obtain the desired shape.
Welding Services: Stainless steel can be subjected to various types of welding services, including manual arc welding, gas-shielded welding, laser welding, etc.
Hole Turning And Machining: Stainless steel is turned and holes are machined through the use of machining equipment. These processes produce smooth surfaces, precise holes and threads to meet specific assembly requirements.
Surface Treatments: Surface treatments can be applied to improve the corrosion resistance and aesthetics of the stainless steel. This includes methods such as painting, hot dip galvanizing, and electroplating to add a protective layer and provide corrosion resistance.

Ask Deep Processing Services

Gnee stainless steel can provide testing and the following third-party inspection services. These third-party testing services provide independent and objective verification of stainless steel’s compliance with relevant standards and regulations.

Mechanical Property Testing: Used to determine whether the strength, toughness, ductility and other mechanical properties of stainless steel meet the specified requirements.
Chemical Composition Analysis: Quantitative determination of elements on stainless steel samples through spectral analysis, atomic absorption spectroscopy, inductive coupling and other technologies.
Corrosion Performance Test: Common corrosion performance test methods include salt spray corrosion test, acid-base corrosion test and electrochemical corrosion test.
Tensile Strength Test: Through the tensile test, the parameters such as yield strength, tensile strength and breaking strength of stainless steel during the tensile process are measured.
Non-Destructive Testing: Non-destructive testing is used to evaluate hidden defects, cracks and looseness in stainless steel materials. Common methods include ultrasonic testing, magnetic particle testing, eddy current testing, and radiographic testing.
Pressure Test: By exposing stainless steel products to a specific pressure, it is tested whether there are problems such as leakage or deformation to ensure that its pressure resistance meets the requirements.
Surface Quality Test: Used to evaluate the surface flatness, smoothness and oxide layer of stainless steel products.
Welding Performance Test: Check the appearance, mechanical properties and metallographic microstructure of the weld to ensure that the quality of the stainless steel welded joint meets the requirements.
Metallographic Inspection: Through metallographic inspection, the structure, grain size, non-metallic inclusions, etc. of stainless steel are checked to evaluate its quality and performance.

Ask Testing Services
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