What Is Monel 400? Alloy 400, UNS N04400 & 2.4360 Explained
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Table of Contents
- What Is Monel 400?
- Monel 400 International Designations
- What Is Monel 400 Made Of?
- Key Properties of Monel 400
- Where Is Monel 400 Used?
- Monel 400 Round Bar and ASTM B164
- Why Industries Specify Monel 400
- How to Buy Monel 400 Round Bar
- Why Source Monel 400 from Manan Steel & Metals?
- Frequently Asked Questions
- Request a Monel 400 Quotation
What Is Monel 400?
Monel 400 is a nickel-copper alloy developed for applications requiring a combination of corrosion resistance, strength and toughness.
It is identified internationally as UNS N04400 and is also associated with Werkstoff 2.4360. Buyers may encounter the material under several names, including MONEL® Alloy 400, Alloy 400, Nickel-Copper Alloy 400 and N04400.
Special Metals identifies MONEL Alloy 400 as UNS N04400 / W.Nr. 2.4360 and 2.4361 and describes it as a solid-solution nickel-copper alloy that can be strengthened through cold working.
For an industrial buyer, these different designations are important because a purchase enquiry should clearly identify the required material.
A simple specification such as:
Monel 400 / UNS N04400
can make the material requirement much clearer.
Monel 400 International Designations
Different countries, standards and procurement systems can use different names for the same alloy.
| Designation System | Monel 400 Identification |
|---|---|
| Commercial Name | Monel 400 / MONEL® Alloy 400 |
| Alloy Name | Alloy 400 |
| UNS | N04400 |
| Werkstoff | 2.4360 |
| European designation | NiCu30Fe |
| Nickel-Copper Alloy | Alloy 400 |
| Common product term | Monel 400 Round Bar / Monel 400 Rod |
The exact specification should always be confirmed against the applicable product standard and purchase requirement.
For round bar and rod, ASTM B164 is an important specification. The current ASTM B164-26 covers nickel-copper alloys including UNS N04400 and N04405 in rod, bar and wire forms.
What Is Monel 400 Made Of?
Monel 400 is primarily a nickel-copper alloy.
Its composition is designed around a nickel-rich matrix with copper as the major alloying addition, along with controlled amounts of elements such as iron, manganese, carbon and silicon.
A typical chemistry reference includes:
| Element | Typical Requirement |
|---|---|
| Nickel + Cobalt | 63.0–70.0% |
| Copper | 28.0–34.0% |
| Iron | 2.5% max |
| Manganese | 2.0% max |
| Carbon | 0.30% max |
| Silicon | 0.50% max |
The exact chemical requirements depend on the applicable specification and product form, so buyers should verify the material against the specified standard rather than relying only on a generic composition table.
For procurement of round bars, ASTM B164 is particularly relevant because it covers nickel-copper alloy rod, bar and wire.
Key Properties of Monel 400
The reason Monel 400 remains relevant in industrial engineering is its combination of several useful properties.
1. Corrosion Resistance
Monel 400 offers resistance to many corrosive environments, particularly selected marine and chemical-processing conditions.
Special Metals identifies marine and chemical processing among the major application areas for the alloy.
2. Strength and Toughness
The alloy provides useful mechanical strength and toughness over a broad temperature range.
This makes it suitable for components that require both mechanical performance and corrosion resistance.
3. Marine-Service Capability
Monel 400 has a long history in marine engineering because of its resistance to corrosion from flowing seawater.
Special Metals specifically identifies MONEL alloy 400 among the alloys used for marine engineering applications.
4. Cold-Work Strengthening
Monel 400 is a solid-solution alloy that can be strengthened by cold working.
This characteristic is important when selecting the required material condition for an engineering component.
5. Industrial Versatility
Monel 400 can be supplied in different product forms and is used for components such as bars, rods, fasteners, pumps, valves and other engineering parts.
Where Is Monel 400 Used?
Monel 400 is used across industries where corrosion resistance and mechanical performance are important.
Typical applications include:
- Marine equipment
- Seawater-handling components
- Pumps
- Valves
- Pump shafts
- Propeller shafts
- Marine fixtures
- Fasteners
- Chemical-processing equipment
- Heat exchangers
- Petroleum-processing equipment
- Process vessels
- Piping components
- Industrial machinery
Special Metals lists applications including valves and pumps, pump and propeller shafts, marine fixtures and fasteners, chemical-processing equipment, petroleum-processing equipment, heat exchangers and other industrial components.
This broad application base makes Monel 400 Round Bar an important material for manufacturers and engineering companies producing machined components.
Monel 400 Round Bar and ASTM B164
When the requirement is for a round bar or rod, the buyer should specify the material together with the applicable standard.
A typical enquiry can be written as:
Material: Monel 400
UNS: N04400
Product: Round Bar
Specification: ASTM B164
Diameter: Required size
Length: Required length
Quantity: Required quantity
Condition: As required
Testing: As required
Certificate: MTC / documentation as required
ASTM B164-26 covers nickel-copper alloy UNS N04400 and N04405 in hot-worked and cold-worked rod and bar forms, along with cold-worked wire.
For the official standard information, buyers can refer to ASTM B164.
Why Industries Specify Monel 400
Material selection is not simply about choosing a metal with high strength.
The operating environment also matters.
An engineering component exposed to seawater, chemical media or demanding industrial conditions may require a combination of:
- Corrosion resistance
- Mechanical strength
- Toughness
- Suitable machinability
- Marine-service performance
- Chemical-service capability
- Appropriate material certification
Monel 400 can provide this combination in applications where its specific corrosion and mechanical characteristics are suitable.
However, material selection should always consider the actual temperature, chemistry, concentration, flow conditions, mechanical loads and applicable engineering standard.
How to Buy Monel 400 Round Bar
When requesting a quotation, avoid sending only:
“Monel 400 required.”
A better industrial enquiry includes the technical information needed for accurate identification and quotation.
Recommended enquiry format
Material: Monel 400
UNS: N04400
Standard: ASTM B164 / project specification
Diameter: ____ mm
Length: ____ mm
Quantity: ____ kg / pieces
Condition: ____
Finish: ____
Testing: ____
Certificate: ____
Application: ____
Providing this information helps the supplier understand the actual requirement and reduces unnecessary clarification during procurement.
Why Source Monel 400 from Manan Steel & Metals?
Manan Steel & Metals supplies specialty metals and industrial alloy products from Mumbai, India.
Monel 400 is part of the company’s publicly listed product range, including Monel Round Bars. Manan also identifies ASTM B164 Monel 400 Round Bar within its product information.
For buyers searching for a Monel 400 supplier in India, the most useful starting point is to send the complete requirement rather than requesting only a generic price.
You can also explore the Manan Steel & Metals Monel 400 Round Bar page for product-specific information.
For broader industrial requirements, visit the Manan Steel & Metals website.
Frequently Asked Questions
What is Monel 400?
Monel 400 is a nickel-copper alloy identified as UNS N04400. It is used for selected marine, chemical-processing and industrial applications requiring corrosion resistance combined with mechanical performance.
What is the UNS number of Monel 400?
The UNS designation for Monel 400 is N04400.
What is the Werkstoff number of Monel 400?
Monel 400 is commonly identified with Werkstoff 2.4360. Special Metals also lists 2.4361 in its identification for the alloy.
Is Monel 400 the same as Alloy 400?
Yes. Monel 400 and Alloy 400 are commonly used names for the nickel-copper alloy identified by UNS N04400. The commercial designation MONEL® is associated with Special Metals.
What is ASTM B164?
ASTM B164 is the specification for nickel-copper alloy rod, bar and wire. The current ASTM specification covers UNS N04400 and N04405.
Where is Monel 400 used?
Common applications include marine equipment, pumps, valves, shafts, fasteners, chemical-processing equipment, petroleum-processing equipment and heat-exchanger components.
Can I buy Monel 400 Round Bar in India?
Yes. Manan Steel & Metals lists Monel Round Bars and Monel 400 requirements as part of its specialty-metal product range. Contact the company with your required diameter, length, quantity and specification for availability and quotation.
Request a Monel 400 Round Bar Quotation
Looking for Monel 400 Round Bar Supplier India?
Send your requirement to Manan Steel & Metals:
Material: Monel 400
UNS: N04400
Specification: ASTM B164 / as required
Diameter: ______ mm
Length: ______ mm
Quantity: ______ kg
Condition: ______
Finish: ______
Testing: ______
Certificate: ______
Manan Steel & Metals
Shop No. 2, Hira Building,
97 Khetwadi Main Road (Nanubhai Desai Road),
Girgaon, Mumbai – 400004, Maharashtra, India
Phone: 7977369869
Email: manansteel@gmail.com
Website: https://www.manansteel.com/
Send your Monel 400 requirement today for availability and quotation.