Nickel Alloys Alloy 400 Flanges Overview
Zeon Exports supplies Nickel Alloy 400 (Monel, UNS N04400) flanges, a nickel-copper alloy with outstanding resistance to seawater, hydrofluoric acid and alkaline solutions for marine, oil & gas and chemical process piping.
Nickel Alloy 400 (Monel) Flanges connect and seal seawater, brine and acidic process piping in marine and chemical systems where standard stainless steels fall short. Its nickel-copper composition, with minimum 63% nickel plus cobalt and 28-34% copper, resists seawater, hydrofluoric acid, deaerated hydrochloric acid, alkaline solutions and steam across a wide temperature range.
- Minimum 63% nickel plus copper for outstanding seawater resistance
- Essentially non-magnetic in the annealed condition
- EN 10204 3.1 certified, export-ready worldwide
Quick Specifications of Nickel Alloys Alloy 400 Flanges
Nickel Alloy 400 (Monel) Flanges are produced to internationally recognized specifications.
| Field | Detail |
|---|---|
| Material/Grade | Nickel Alloy 400 (Monel) |
| UNS | N04400 |
| DIN/Werkstoff Number | 2.4360 |
| Standards | ASTM B564 |
| Form | Weld Neck, Slip-On, Blind, Socket Weld |
| Finish | As specified (confirm on order) |
| Heat Treatment | Annealed |
| Certification | EN 10204 3.1 |
Equivalent Grades of Alloy 400
Alloy 400 (Monel) is recognized under several international designations below.
| UNS | DIN/Werkstoff Number | Common Trade Name | ASTM/ASME Standard |
|---|---|---|---|
| N04400 | 2.4360 | Monel 400 | ASTM B564 |
Chemical Composition of Alloy 400
Composition per ASTM B564 for UNS N04400; exact limits can vary slightly by specification and heat.
| Element | Composition (%) |
|---|---|
| Nickel + Cobalt (Ni+Co), min | 63.0 |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe), max | 2.5 |
| Manganese (Mn), max | 2.0 |
| Carbon (C), max | 0.30 |
| Silicon (Si), max | 0.50 |
| Sulphur (S), max | 0.024 |
Physical Properties of Nickel Alloy 400 (Monel)
Physical properties for Monel 400, confirmed against manufacturer data.
| Property | Value |
|---|---|
| Density | 8.83 g/cm3 |
| Melting Range | 1300 – 1350°C |
| Magnetic Behaviour | Essentially non-magnetic (annealed) |
Mechanical Properties of Nickel Alloys Alloy 400 Flanges
Minimum mechanical properties per ASTM B564 for UNS N04400.
| Property | Minimum Value |
|---|---|
| Tensile Strength | 483 MPa (70 ksi) |
| Yield Strength (0.2% offset) | 172 MPa (25 ksi) |
| Elongation | 35% |
| Hardness | 150 HB max |
| Condition | Annealed |
Corrosion Resistance of Nickel Alloy 400 (Monel)
- Nickel Alloy 400 Flanges offer a corrosion profile distinct from stainless steels, built around resistance to reducing rather than oxidizing media.
- Seawater resistance: excellent resistance to seawater and marine atmospheres, widely used in shipbuilding and offshore piping.
- Acid resistance: strong resistance to hydrofluoric acid and deaerated hydrochloric acid.
- Alkali resistance: performs well in caustic soda and other alkaline process streams.
Heat Resistance of Nickel Alloy 400 (Monel)
Nickel Alloy 400 flanges maintain good mechanical properties from sub-zero temperatures up to roughly 538°C (1,000°F). Strength decreases progressively above this range. Always confirm exact service limits against the governing standard and application before specifying.
Key Properties of Nickel Alloys Alloy 400 Flanges
Beyond corrosion and heat performance, Monel 400 flanges offer these additional properties.
- Good weldability using ERNiCu-7 (Monel 60) matching filler metal
- Strengthened by cold working, not heat treatment
- Good machinability compared to other nickel alloys
- Good toughness maintained into cold service temperatures
Benefits of Nickel Alloys Alloy 400 Flanges
Choosing Monel 400 flanges from Zeon Exports delivers measurable advantages for your project.
- Proven century-long track record in marine and chemical service
- Full MTC 3.1 documentation for project QA/QC requirements
- Multiple flange types and pressure classes to match project specs
- Reliable bulk supply with consistent ready stock
- Competitive export pricing for large industrial orders
- Fast dispatch to global project sites and ports
Related Products
Explore related Nickel Alloy products from Zeon Exports.
Request a Quote for Nickel Alloys Alloy 400 Flanges
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Call: +91 98205 33105
Email: info@zeonexports.com
Website: www.zeonexports.com
Address: A-7/9, Saboo Building, Ardeshir Dady Cross Lane, Cawasji Patel Tank Road, Mumbai – 400004
Frequently Asked Questions About Nickel Alloys Alloy 400 Flanges
Common questions about Nickel Alloy 400 (Monel) Flanges, answered below.
Q1: What is Nickel Alloy 400 (Monel)?
Ans. Monel 400 (UNS N04400) is a nickel-copper alloy with minimum 63% nickel plus cobalt and 28–34% copper.
Q2: What flange types are available in Monel 400?
Ans. We supply Weld Neck, Slip-On, Blind and other flange types manufactured to ASTM B564.
Q3: What standards do Monel 400 flanges meet?
Ans. Flanges are manufactured to ASTM B564, certified to EN 10204 3.1 mill test certificates.
Q4: Is Monel 400 magnetic?
Ans. Monel 400 is essentially non-magnetic in the annealed condition, though slight magnetism can occur with cold working.
Q5: What is the maximum service temperature?
Ans. Monel 400 maintains good mechanical properties up to roughly 538°C (1,000°F); confirm exact limits against your design code.
Q6: Is Monel 400 suitable for seawater service?
Ans. Yes, Monel 400 has excellent resistance to seawater and marine atmospheres, widely used in shipbuilding.
Q7: What certification is provided with orders?
Ans. Every order ships with EN 10204 3.1 mill test certificates confirming grade, heat and dimensions.
Q8: Does Zeon Exports supply custom flange sizes?
Ans. Yes, flanges are available in custom sizes and pressure classes on request for bulk industrial orders.
