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Monel 400 Pipes Manufacturer & Supplier in India

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Monel 400 Pipes (UNS N04400 / WNR 2.4360) are nickel-copper alloy pipes built to handle tough conditions. They function well in chemical, offshore and marine environments and are known for their corrosion resistance. Midland Alloys Inc. is a top manufacturer of UNS N04400 pipes that meet ASTM B165 and ASME SB165 requirements and provide pipes in seamless and welded forms. As a trusted Monel 400 pipe manufacturer in India, we offer strong and reliable pipes designed for your needs. We are the nickel alloy 400 pipe exporter, with ready stock and options to customize sizes. Need details on the Monel 400 pipe price? Get in touch for a quick quote and expert support.

Monel 400 Pipes

What Is Monel 400 Pipe (UNS N04400 / WNR 2.4360)?

Monel 400 pipe is a high-performance alloy made from a solid solution of nickel and copper, designed to resist seawater, acidic environments, and alkaline conditions. UNS N04400 pipe delivers excellent strength, ductility, and stability under extreme temperatures. This alloy remains non-magnetic when annealed, making it ideal for sensitive and demanding systems. ASTM B165 Monel pipe is manufactured in line, and it’s a go-to material where stainless steel falls short.
Specification Monel 400 Pipes
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Key Properties & Benefits of Monel Alloy 400 Pipes

Monel 400 pipes are a high-performance alloy known for their excellent resistance and mechanical reliability in harsh and corrosive environments.
  • Offers outstanding corrosion resistance in marine, acidic, and alkaline environments
  • Monel 400 strength is maintained under high heat and mechanical stress
  • Remains non-magnetic when annealed, ideal for sensitive equipment
  • Resists pitting, erosion, and cavitation in turbulent or corrosive flow
  • Provides good weldability and easy fabrication with standard methods
  • Retains mechanical integrity across sub-zero to elevated temperatures
  • Has a low work-hardening rate, supporting easier machining and forming
  • Performs reliably in salt spray and under variable pressure conditions
These Monel 400 pipe properties make the alloy suitable for demanding and extreme conditions where standard metals fail.

Monel 400 vs Stainless Steel – Which is Better?

Monel 400 beats stainless steel like 316L or 304 when corrosion resistance matters most, especially in seawater or acidic environments.While stainless steels often reach a maximum temperature of 1,600°F but struggle more in corrosive conditions, it can withstand temperatures as high as 1,300°F. Monel costs more, but its toughness against pitting and stress corrosion makes it worth it for tough applications. Choose Monel over 316L or 304 when facing salty, acidic, or hot environments that would wear stainless steel down fast.

Monel 400 Pipe Specifications – ASTM B165 / ASME SB165

This section outlines the standard specifications for Monel 400 pipes, including UNS and Werkstoff numbers, outer diameter, wall thickness, pipe ends, available lengths, and applicable standards.
Finish
Sizes in Stock

Seamless Pipe OD : ½″ NB – 12″ NB
Welded Pipe OD : ½″ NB – 24″ NB
EFW Pipe Size : 6″ NB – 24″ NB

ASTM Standard
Standard

ASTM B 165 ASME SB 165 / ASTM B 725 ASME SB 725

Process
Manufacturing Process

Seamless, ERW, Welded, Fabricated

Form
Form

Round, Square, Rectangular, Hydraulic Etc

Length
Length

Single Random, Double Random & Cut Length.

End Icon
End

Plain End, Beveled End, Treaded

Schedule
Schedule

SCH5, SCH10, SCH20, SCH30, SCH40, STD, SCH80, SCH 80S, SCH60, SCH80, SCH120, SCH140, SCH160, SCH XXS, SCH XS

Finish
Surface Finish

No. 2B – Mill finish / Matte finish, No. 4 – Brushed finish, No. 8 – Mirror finish, Bright Annealed – Smooth / Slightly reflective, Polished – Smooth / Enhanced corrosion resistance,Mirror – Highly reflective,

Types & Forms of Monel 400 Pipes

To meet a variety of industrial needs, Monel 400 pipes are offered in a range of cross-sectional shapes and manufacturing types. Below is a list of key Monel 400 pipe forms and production types, each explained briefly for easy reference.

Manufacturing Types

  • Seamless Monel 400 Pipe
    Seamless Monel 400 Pipe

    Featuring a clean interior finish and a consistent structure, this pipe is made by hot extrusion or rotary piercing without the need for welds.

  • Welded Monel 400 Pipe
    Welded Monel 400 Pipe

    Fabricated from Monel sheets or coils, these pipes have a longitudinal seam, and are ideal for general use systems.

  • ERW Monel 400 Pipe
    ERW Monel 400 Pipe

    Cold-formed and joined using electric resistance welding, this type provides a cost-effective welded solution with consistent quality.

  • Cold Drawn UNS N04400 Pipe
    Cold Drawn UNS N04400 Pipe

    These pipes are appropriate for instrumentation and precision applications and are drawn through a die for precise dimensional control.

  • Hot Finished Pipe
    Hot Finished Pipe

    Produced at high temperatures, this type is ideal for thicker walls and heavy-duty operations needing added strength.

Pipe Forms

  • Round Pipe
    Round Pipe

    The most common shape, round Monel 400 pipes are used in standard fluid, gas, and structural lines.

  • Square Pipe
    Square Pipe

    Offers clean lines for structural frames or visible piping where design and alignment matter.

  • Rectangular Pipe
    Rectangular Pipe

    Used when space is limited or where piping must fit into narrow channels or enclosures.

  • Capillary Pipe
    Capillary Pipe

    A highly precise fine-bore pipe that is perfect for laboratories, control lines, and equipment.

  • Bush Hex / Exhaust Pipe
    Bush Hex / Exhaust Pipe

    Special-purpose forms made for unique flow systems or exhaust handling applications.

  • Schedule Types
    Schedule Types

    Available in SCH 5S, SCH 10S, SCH 40S, and more, depending on required wall thickness and pressure rating.

Contact Midland Alloys Inc. for Your Monel 400 Pipes Needs

Contact us today to discuss how Monel 400 Pipes can benefit your application. Whether you need guidance in selecting the right pipes or have specific requirements, our team of experts is here to help you find the optimal solution.

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Technical Details & Delivery Condition

The table composition of Monel 400 as per international standards includes percentages of nickel, copper, iron, carbon, manganese, silicon, and sulfur that contribute to the alloy’s corrosion resistance and strength.

 

Monel 400SNiFeCSiAlMnCu
0.02 max63.0 min1.0 – 2.50.3 max0.5 max0.50 max2.0 max28.0 – 34.0

The mechanical property values of Monel 400 seamless pipes, such as tensile strength, yield strength, elongation, and hardness. These values are critical for determining performance in pressure, thermal, and mechanical applications.

 

DensityYield Properties (0.2%Offset)Melting PointElongationalTensile Properties
8.8 g/cm3Psi – 35,000 , MPa – 2401350 °C (2460 °F)40 %Psi – 80,000 , MPa – 550

 

STANDARDWERKSTOFF NR.UNSAFNORBSENJISGOST
Monel 4002.4360N04400NU-30MNA 13NiCu30FeNW 4400МНЖМц 28-2,5-1,5

The dimensional tolerance range allowed for Monel 400 seamless pipes covers permissible variations in wall thickness, outside diameter, and length to ensure consistent quality and fit during installation.

ODWT ToleranceOD Tolerance
in.%mm
1/4″+/-10+/-0.10
1/8″+/-10+0.08/-0
Up to 1/2″+/-15+/-0.13
1-1/2″ to 3-1/2″, excl+/-10+/-0.25
1/2″ to 1-1/2″, excl+/-10+/-0.13

The HSN code applicable to Nicorros 400 (another name for Monel 400) hot-finished pipes. This classification is used for invoicing, taxation, and customs documentation during domestic and international trade.

HSN CodeProduct
7507Monel 400 Pipe

The machinability of Monel 400 square pipes under the Werkstoff number 2.4360. It includes insights into cutting behavior, work hardening, and tool compatibility needed for shaping and fabrication.

Manufacturing Condition (Size – 0.032 to 0.250 in.)Yield Strength (MPa) 0.2%Tensile Strength (MPa)
Cold – Drawn, Stress – Relieved Seamless Pipes55 – 100 (379 – 690)85 – 120 (586 – 827)
Cold – Drawn, Annealed Seamless Pipes25 – 45 (172 – 310)70 – 85 (482 – 586)
Heat – Exchanger, Stress – Relieved Seamless Pipes55 – 90 (379 – 621)85 – 105 (586 – 724)
Heat – Exchanger, Annealed Seamless Pipes28 – 45 (193 – 310)70 – 85 (482 – 586)
Annealed No. 1 Temper30 – 45 (207 – 310)85 max (586 max)
Full – Hard No. 3 Temper90 – 110 (621 – 758)110 – 130 (758 – 896)
Half – Hard No. 2 Temper55 – 80 (379 – 552)85 – 105 (586 – 724)

The weight chart provides the theoretical weight per meter of Monel 400 seamless pipes based on outside diameter and wall thickness. This helps with accurate shipping estimates, load planning, and cost calculations.

NPSODWT WeightWeight
mminmminSchedLb/ftkg/Mtr
1″331.3153.3780.13340 STD1.6792.501
   4.5470.17980 STD2.1723.325
3/4″271.0502.8700.11340 STD1.1311.684
   3.9120.15480 STD1.4742.195
1 1/4″421.6603.5560.14040 STD2.2733.385
   4.8510.19180 STD2.9974.464
2″602.3753.9120.15440 STD3.6535.441
   5.5370.21880 STD5.0227.480
1 1/2″481.9003.6830.14540 STD2.7184.048

Monel Pipes Grades We Offer

Pipes

Monel Pipes

Welded Pipes

Monel 400 Pipes

Seamless Pipes

Monel K500 Pipes

Manufacturing Process of Monel 400 Pipes

Round Bar

Round Bar

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Analytic

Analytic

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Cut to Length

Cut to Length

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Centering

Centering

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Heating

Heating

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Perforation

Perforation

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Inspection of Size

Inspection of Size

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Pickling

Pickling

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Inspection of Surface

Inspection of Surface

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Lubricating

Lubricating

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Cold Drawing (Cold Rolling)

Cold Drawing (Cold Rolling)

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Degreasing

Degreasing

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Annealing

Annealing

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Straightening

Straightening

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Cut

Cut

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Pickling / Passivating

Pickling / Passivating

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Inspection

Inspection

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Analytic

Analytic

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Marking

Marking

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Packing & Shipping

Packing & Shipping

Applications of Monel 400 Pipes

Monel 400 pipe is used in various demanding industries where strength, corrosion resistance, and thermal stability matter. In marine environments, these pipes are used in seawater systems, desalination plants, and offshore structures, due to their resistance to saltwater and harsh marine conditions. The Monel pipe for chemical processing handles strong acids, alkalis, and other corrosive media with ease, making it ideal for reactors, heat exchangers, and storage lines. Power plants use it in steam systems and high-pressure environments where metal failure isn’t an option. This alloy is also appropriate for sensitive aerospace components and specific pharmaceutical equipment due to its non-magnetic nature. It is employed in corrosive fluids, pressure variations, and sour gas in the oil and gas industry.
Offshore Industry
Nuclear Industries
Refineries
Ship Building
Aerospace
Pharmaceutical

Surface Finishes & Customization Options

We offer a wide range of surface finishes and Monel 400 pipe customization options to suit different project needs. Finishes include polished Monel 400 pipe, mill, pickled, bright annealed, in 180–600 grit for clean or decorative use. A bright finish is ideal for chemical service, while polished surfaces work well in exposed areas. We support tight diameter and wall thickness tolerances for precise fit-ups. Monel pipe beveled ends are also available in plain (PE) or threaded (TE) based on application. Lengths can be standard, fixed, or custom-cut. If you’re looking for customized sizes or finish types, check our UNS N04400 surface finish range and detailed Monel pipe export packaging info for safe global delivery.

Why Choose Midland Alloys Inc. for Monel 400 Pipes?

Choose Midland Alloys Inc. for dependable supply and manufacturing of Monel 400 pipes. We’re known for high-quality checks, full material traceability, and on-time delivery every time. With ISO 9001:2015 certification and in-house testing, we make sure every order meets high standards. Whether it’s a custom size, a bulk requirement, or an urgent dispatch, we handle it with ease. Our packaging meets international export norms, and we provide complete documentation for hassle-free global shipping. As a trusted monel alloy pipe exporter, we’re proud to serve clients across India and around the world with reliable, tailored solutions. Monel 400 pipe is used in various demanding industries where strength, corrosion resistance, and thermal stability matter. In marine environments, these pipes are used in seawater systems, desalination plants, and offshore structures, due to their resistance to saltwater and harsh marine conditions. The Monel pipe for chemical processing handles strong acids, alkalis, and other corrosive media with ease, making it ideal for reactors, heat exchangers, and storage lines. Power plants use it in steam systems and high-pressure environments where metal failure isn’t an option. This alloy is also appropriate for sensitive aerospace components and specific pharmaceutical equipment due to its non-magnetic nature. It is employed in corrosive fluids, pressure variations, and sour gas in the oil and gas industry.

Frequently Asked Questions About Monel 400 Pipes

Yes, Monel 400 offers superior corrosion resistance in marine and chemical environments compared to stainless steel.

Monel 400 pipes operate effectively from cryogenic temperatures up to around 550°C (1022°F).

Yes, Monel 400 is slightly magnetic in certain conditions, especially after cold working.

 Common standards include ASTM B165, ASME SB165, and other international specifications.

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