UNS N04400 Monel 400 Spectacle Blind Flanges Manufacturer Stockist Exporter
We are manufacturers, stockist and exporters of UNS N04400 Monel 400 Spectacle Blind Flanges in Mumbai.
Monel 400 (UNS N04400) spectacle blind flanges from Synergy Engineering Solution offer robust performance in a wide variety of corrosive environments. Monel 400 is a nickel-copper alloy known for its resistance to seawater, hydrofluoric acid, sulfuric acid, chlorides, and alkaline solutions. The alloy also maintains mechanical strength at elevated temperatures. Because of this balanced performance, Monel 400 is frequently chosen for isolation duties (spectacle blinds) in marine, chemical, oil & gas, desalination and offshore applications.
Synergy manufactures spectacle blind flanges in Monel 400 using certified bar, plate or forging stock, following controlled machining and finishing steps. Each flange is precision machined to the required thickness and bolt-hole pattern, and face type selection (raised face, flat face, ring-type joint) is customized per project specifications. Synergy ensures full traceability—each item is delivered with Material Test Certificates (MTC), heat numbers, dimensional inspection reports, and additional third-party inspection if required. This quality control is critical for clients in the Gulf, Europe, North America and Africa, especially in industries with strict compliance and safety standards.
Stocking strategy is a major strength of Synergy Engineering. The company maintains inventories of commonly used sizes and pressure classes of Monel 400 spectacle blind flanges ready for fast dispatch to key markets such as Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, USA, Canada and Africa. When customers require non-standard sizes, large diameters or exotic specifications, Synergy arranges batch production, consolidates shipments, and handles all export documentation (commercial invoices, packing lists, certification, COA) to smooth customs and reduce transit delays.
From a performance viewpoint, Monel 400 spectacle blind flanges are ideal where resistance to pitting, corrosion and stress-corrosion cracking is required in chloride or sulfur-laden environments. Their strength at both ambient and elevated temperatures also ensures that isolation components remain robust under thermal cycling. Synergy can provide guidance on gasket selection, bolt torques, and compatibility with adjoining piping materials, helping engineers maintain leak-tight integrity in critical systems.
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Why clients worldwide rely on Synergy: not only does the company combine metallurgical expertise in Monel alloys with manufacturing capability, but it also offers competitive pricing for project-scale orders and flexibility for maintenance-level spares. The global export footprint—including GCC, Europe, North America, and Africa—means customers benefit from streamlined logistics, consistent lead times, and reliable supply chains. Synergy’s technical support, certification discipline and on-time delivery are often cited in client references as key reasons for repeat business.
Why source from Synergy Engineering Solution & Exporter: beyond alloy expertise and documented quality systems, Synergy combines competitive pricing for project volumes with flexible minimum order quantities for maintenance spares, responsive pre-sales technical support, and reliable international shipping lanes. Customers benefit from single-point procurement for material sourcing, inspection documentation and export logistics.
UNS N04400 / Monel 400 Spectacle Blind Flanges
Specification
| Property | Details |
|---|---|
| Product Name | Monel 400 Spectacle Blind Flange |
| Grade | UNS N04400 / WNR 2.4360 / 2.4361 |
| Standard | ASTM B564 / ASME SB564, ASME B16.5 / B16.47 |
| Manufacturing Type | Forged / Machined / Plate Cut |
| Face Type | Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ) |
| Size Range | ½” to 24” (DN15 to DN600) and customized sizes |
| Pressure Rating | Class 150 to 2500 / PN6 to PN400 |
| Certification | EN 10204 3.1 / 3.2, NACE MR0175, ISO 9001 |
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| Nickel (Ni) | 63.0 min |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | 2.5 max |
| Manganese (Mn) | 2.0 max |
| Silicon (Si) | 0.5 max |
| Carbon (C) | 0.3 max |
| Sulfur (S) | 0.024 max |
Mechanical Properties (Annealed Condition)
| Property | Value |
|---|---|
| Tensile Strength | 550 MPa (min) |
| Yield Strength (0.2% offset) | 240 MPa (min) |
| Elongation | ≥ 35% |
| Hardness | ≤ 80 HRB |
| Density | 8.8 g/cm³ |
| Melting Point | 1300 – 1350°C |
Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | N04400 |
| Werkstoff Nr. | 2.4360 / 2.4361 |
| Alloy | Monel® 400 |
| EN / DIN | NiCu30Fe |
| JIS | NW4400 |
| BS | NA13 |
| AFNOR | NU-30M |
Frequently Asked Questions (FAQ)
Q1: What are the advantages of Monel 400 Spectacle Blind Flanges?
A: Monel 400 flanges offer exceptional resistance to seawater, salt spray, acids, and alkalis, making them ideal for marine and chemical industries where corrosion resistance and durability are vital.
Q2: In which industries are Monel 400 spectacle blind flanges used?
A: They are widely used in desalination, petrochemical, shipbuilding, oil & gas, and marine engineering applications for line isolation and maintenance purposes.
Q3: What types of face finishes are available?
A: Synergy offers Raised Face (RF), Flat Face (FF), and Ring Type Joint (RTJ) finishes, as well as custom finishes based on client specifications.
Q4: Does Synergy provide certification and inspection reports?
A: Yes, every flange is supplied with Material Test Certificate (EN 10204 3.1 / 3.2), heat number traceability, PMI test reports, and optional third-party inspection certificates.
Q5: What makes Synergy Engineering Solution & Exporter a trusted supplier?
A: Synergy offers superior quality, competitive pricing, timely delivery, and complete export documentation. The company exports globally to Oman, Qatar, Saudi Arabia, UAE, Kuwait, Spain, Germany, USA, Canada, and Africa.
In order to alter the physical and mechanical characteristics of metal without altering its original shape and size, we offer a variety of heat treatment services, including hydrogen heat treatment, HIC testing, blasting and painting, cutting, arc welding, epoxy cutting, PMI testing, hydro testing, NACE testing, and SSC testing. Although heat treatment is frequently linked to a metal's increased strength, it can also be used to change specific manufacturability goals, such enhancing machinability, formability, ductility, etc. The metal and heavy manufacturing sectors use our services. Customers have expressed great pleasure with our services' precision, efficacy, cost, and prompt delivery.
Flanges Testing Methods
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