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Incoloy Flanges

Product Overview

Incoloy Flange Stockist in India | Incoloy Flange Supplier in India

Incoloy flanges are nickel-iron-chromium alloy piping components designed for high-temperature, high-pressure, and corrosive industrial environments. As a reliable Incoloy Flange Stockist in India and Incoloy Flange Supplier in India, we supply a range of Incoloy flanges in different grades, dimensions, pressure classes, and flange configurations.

Incoloy Flanges supplied by Metal-Link Steel and Alloys

Incoloy alloys are commonly selected for applications where conventional carbon steel, stainless steel, or even a Titanium Flange may not provide the required combination of oxidation resistance, carburization resistance, high-temperature strength, and corrosion performance.

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Material Grades

Incoloy Flange Grades Available

Incoloy 800 Flanges

Incoloy 800 is a nickel-iron-chromium alloy developed for high-temperature applications. Its controlled composition provides good structural stability and resistance to oxidation and carburization at elevated temperatures.

Key characteristics include:

  • Good oxidation resistance at elevated temperatures
  • Resistance to carburization
  • Good structural stability
  • Suitable for prolonged high-temperature service

Incoloy 800 flanges are commonly used in furnace equipment, petrochemical plants, heat-treatment systems, and high-temperature process piping.

Incoloy 800H Flanges

Incoloy 800H is a higher-carbon version of the 800 series designed for improved creep and rupture strength at elevated temperatures. It is particularly suitable for applications involving sustained exposure to high temperatures.

Key characteristics include:

  • Improved creep resistance
  • Higher stress rupture strength
  • Good oxidation resistance
  • Suitable for elevated-temperature pressure systems

Incoloy 800H flanges are widely used in steam reformers, petrochemical processing, industrial furnaces, and high-temperature piping systems.

Incoloy 800HT Flanges

Incoloy 800HT is a further controlled variation of the Incoloy 800 series. It contains controlled aluminium and titanium levels to improve high-temperature strength and creep resistance.

Key characteristics include:

  • Excellent high-temperature mechanical strength
  • Improved creep resistance
  • Good oxidation and carburization resistance
  • Suitable for prolonged exposure to elevated temperatures

Incoloy 800HT flanges are used in furnace components, petrochemical plants, heat-processing equipment, and other high-temperature industrial systems.

Incoloy 825 Flanges

Incoloy 825 is a nickel-iron-chromium alloy containing molybdenum and copper for enhanced corrosion resistance. Unlike the 800 series, which is primarily selected for high-temperature strength and oxidation resistance, Incoloy 825 is particularly suitable for aggressive aqueous and chemical environments.

Key characteristics include:

  • Excellent resistance to sulfuric acid and phosphoric acid
  • Good resistance to reducing and oxidizing environments
  • Improved resistance to pitting and crevice corrosion
  • Good resistance to chloride stress corrosion cracking

Incoloy 825 flanges are commonly used in chemical processing, pollution-control systems, acid handling equipment, offshore applications, and oil and gas processing.

Product Configurations

Types of Incoloy Flanges

As an experienced Incoloy Flange Supplier in India, we supply different flange configurations according to pressure, temperature, piping layout, and process requirements.

  • Incoloy Weld Neck Flanges
  • Incoloy Slip-On Flanges
  • Incoloy Blind Flanges
  • Incoloy Socket Weld Flanges
  • Incoloy Threaded Flanges
  • Incoloy Lap Joint Flanges
  • Incoloy Ring Type Joint Flanges
  • Incoloy Spectacle Blind Flanges
  • Incoloy Orifice Flanges
  • Incoloy Reducing Flanges

Incoloy Weld Neck Flanges

Weld neck flanges feature a tapered hub that provides a gradual transition between the flange and pipe. They are generally preferred for high-pressure, elevated-temperature, and cyclic service.

Incoloy Slip-On Flanges

Slip-on flanges are installed over the pipe and welded into position. They are suitable for applications where easier alignment and installation are required.

Incoloy Blind Flanges

Blind flanges are used to close pipeline ends, pressure vessel openings, and process connections. They provide a removable closure for maintenance, inspection, and pressure testing.

Standards & Ratings

Incoloy Flange Standards and Specifications

As a professional Incoloy Flange Stockist in India, we supply Incoloy flanges according to international dimensional standards and project requirements.

Common standards include:

  • ASME B16.5
  • ASME B16.47
  • EN 1092
  • DIN standards
  • BS standards
  • JIS standards

Common pressure classes include:

Class 150
Class 300
Class 600
Class 900
Class 1500
Class 2500

Incoloy flanges can also be manufactured according to customer drawings and project-specific dimensional requirements.

Material Data

Mechanical and High-Temperature Properties of Incoloy Flanges

The mechanical properties of an Incoloy flange depend on the selected grade, heat treatment, manufacturing process, and operating temperature.

Important characteristics include:

  • High-temperature strength
  • Creep resistance in suitable grades
  • Stress rupture resistance
  • Good oxidation resistance
  • Resistance to thermal cycling
  • Good mechanical stability

Incoloy 800H and 800HT are generally selected where long-term strength at elevated temperatures is critical, while Incoloy 825 is chosen primarily for its corrosion resistance in aggressive chemical environments.

Performance Characteristics

Corrosion Resistance of Incoloy Flanges

Different Incoloy grades are designed for different service environments.

The 800 series provides resistance to:

  • Oxidizing environments
  • Carburizing atmospheres
  • High-temperature gases
  • Thermal cycling conditions

Incoloy 825 offers resistance to:

  • Sulfuric acid
  • Phosphoric acid
  • Selected reducing acids
  • Chloride-containing environments
  • Pitting and crevice corrosion

The correct Incoloy grade should always be selected according to chemical composition, operating temperature, pressure, concentration, and potential process contaminants.

Production Process

Incoloy Flange Manufacturing and Fabrication

Incoloy flanges are generally produced through controlled forging, machining, and heat-treatment processes.

The manufacturing process may include:

  • Selection of certified Incoloy raw material
  • Cutting and preparation of forging stock
  • Controlled hot forging or forming
  • Heat treatment as required by the material specification
  • Machining of the bore, hub, flange face, and outside diameter
  • Drilling of bolt holes
  • Dimensional inspection
  • Material identification and testing
  • Final inspection and protective packing

Nickel-based alloys can work-harden during machining, requiring appropriate cutting tools, machining speeds, and process control.

Welding Considerations for Incoloy Flanges

Incoloy alloys generally have good weldability when suitable welding procedures and compatible filler materials are used.

Important fabrication considerations include:

  • Proper cleaning before welding
  • Selection of compatible filler metals
  • Controlled heat input
  • Use of qualified welding procedures
  • Avoidance of contamination
  • Inspection of weld zones for critical applications

The welding procedure should be selected according to the specific Incoloy grade and intended service environment.

Industry Use

Applications of Incoloy Flanges

Incoloy flanges are used in industries requiring reliable performance under corrosive or elevated-temperature conditions.

Major applications include:

  • Petrochemical processing
  • Chemical processing plants
  • Oil and gas facilities
  • Industrial furnaces
  • Heat-treatment equipment
  • Steam reforming systems
  • Power generation
  • Heat exchangers
  • Acid handling systems
  • Pollution-control equipment

Incoloy 800-series grades are particularly suitable for high-temperature equipment, while Incoloy 825 is widely used for corrosion-resistant chemical and process applications.

Incoloy Flanges supplied by Metal-Link Steel and Alloys
Material Selection

Incoloy Flange vs Titanium Flange

A Titanium Flange is often selected for its excellent corrosion resistance and low density, while an Incoloy flange is commonly preferred for high-temperature systems requiring oxidation resistance, creep strength, or carburization resistance.

Property Incoloy Flange Titanium Flange
Primary Advantage High-temperature and corrosion resistance Excellent corrosion resistance and low weight
Base Material Nickel-iron-chromium alloy Titanium or titanium alloy
High-Temperature Strength Excellent for suitable grades Depends on titanium grade and service temperature
Seawater Resistance Grade-dependent Excellent in many seawater applications
Weight Higher Significantly lower
Typical Applications Furnaces, petrochemical, chemical processing Marine, chemical, desalination
Quality Assurance

Testing and Inspection of Incoloy Flanges

Incoloy flanges can be supplied with inspection and testing according to project requirements.

Available testing may include:

  • Visual and dimensional inspection
  • Chemical analysis
  • Mechanical testing
  • Positive Material Identification
  • Ultrasonic testing
  • Liquid penetrant testing
  • Hardness testing
  • Third-party inspection

Documentation may include Material Test Certificates, inspection reports, PMI reports, and other customer-specific quality documents.

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Pan-India Supply

Why Choose Us as Your Incoloy Flange Stockist in India?

As a trusted Incoloy Flange Stockist in India and Incoloy Flange Supplier in India, we supply Incoloy flanges for high-temperature and corrosion-resistant piping applications.

Our supply capabilities include:

  • Incoloy 800 flanges
  • Incoloy 800H flanges
  • Incoloy 800HT flanges
  • Incoloy 825 flanges
  • Standard and custom flange dimensions
  • Multiple flange types and pressure classes
  • Material traceability
  • Mill Test Certificates
  • PMI and NDT support
  • Third-party inspection support

Cities We Supply

MumbaiPuneAhmedabadVadodaraSurat DelhiGurugramNoidaChennaiBengaluru HyderabadKolkataJaipurRajkotCoimbatore VisakhapatnamNagpurIndore
Have Questions?

Frequently Asked Questions About Incoloy Flanges

What is an Incoloy flange?
An Incoloy flange is a piping connection component manufactured from a nickel-iron-chromium alloy. It is designed for high-temperature, high-pressure, and corrosive industrial environments where conventional carbon steel or stainless steel may not provide adequate performance.
What is the difference between Incoloy 800, 800H, and 800HT?
Incoloy 800 is the base grade designed for high-temperature oxidation and carburization resistance. Incoloy 800H is a higher-carbon version with improved creep and rupture strength. Incoloy 800HT features controlled aluminium and titanium levels for further enhanced high-temperature mechanical strength and creep resistance.
When should Incoloy 825 be selected over the 800 series?
Incoloy 825 contains molybdenum and copper additions that provide enhanced resistance to sulfuric acid, phosphoric acid, and aggressive aqueous environments. It should be selected when corrosion resistance in chemical service is the primary requirement rather than high-temperature strength.
Are Incoloy flanges suitable for furnace applications?
Yes. Incoloy 800-series grades are widely used in industrial furnaces, heat-treatment equipment, and steam reforming systems due to their excellent oxidation resistance, carburization resistance, and structural stability at elevated temperatures.
What is the difference between an Incoloy flange and a Titanium Flange?
An Incoloy flange is a nickel-iron-chromium alloy preferred for high-temperature systems requiring oxidation resistance and creep strength. A Titanium Flange is significantly lighter and offers excellent seawater and chloride corrosion resistance, making it more suitable for marine, desalination, and weight-sensitive applications.
What standards apply to Incoloy flanges?
Common dimensional standards include ASME B16.5, ASME B16.47, EN 1092, DIN, BS, and JIS standards. Incoloy flanges are available in pressure classes from Class 150 through Class 2500 and can also be manufactured according to customer drawings and project-specific requirements.
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Buy Incoloy Flanges from a Trusted Supplier in India

As a reliable Incoloy Flange Stockist in India and Incoloy Flange Supplier in India, we supply Incoloy flanges for chemical processing, petrochemical plants, power generation, furnace systems, heat treatment, and high-temperature industrial applications.

Our range includes Incoloy 800, Incoloy 800H, Incoloy 800HT, and Incoloy 825 flanges in different types, sizes, pressure ratings, and dimensional standards. Each flange can be supplied with the required material certification, testing documentation, and traceability to support project quality requirements.

For an accurate quotation, provide the required Incoloy grade, flange type, size, pressure class, standard, quantity, testing requirements, and documentation requirements to ensure the correct product is supplied for your application.

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