Monel 400 Tube Fittings Manufacturer & Suppliers in India
Monel 400 tube fittings are manufactured from a nickel copper alloy (UNS N04400) that is highly resistant to corrosion, high temperature steam, seawater, as well as aggressive chemicals like acids and alkalis. These Monel 400 instrumentation tube fittings deliver leak free connections, long service life, and exceptional durability across oil and gas processing, hydrocarbon refining, marine service, and chemical plant environments. Monel 400 tube fittings are built with high mechanical strength and structural integrity across a broad temperature range, making them a reliable option in the pipeline systems of industries where safety and performance matter most.
Kalpataru Piping Solution is a reputable manufacturer and Monel 400 fittings supplier of Alloy 400 tube fittings designed for challenging industrial use. These fittings are made with high accuracy by means of controlled forming and machining so that the actual sizes are accurate and perform efficiently in engineering systems, line piping, and structural installations. Dual ferrule design Monel 400 double ferrule fittings are secure, vibration resistant connections commonly used in oil and gas drilling, refineries, and high pressure hydrocarbon processing. Kalpataru Piping Solution manages the whole process, including material selection and design, production, and on time delivery, providing reducing unions, end closures, hydraulic and pneumatic connectors, boiler fittings, and automotive system parts with guaranteed quality and reliability.
As an established Monel 400 tube fittings exporter, ready stock is maintained at our Mumbai warehouse for urgent domestic orders, and export shipments are dispatched within 7 to 14 working days of order confirmation. For the broader product range, see our Monel Tube Fittings hub or browse related Inconel Tube Fittings.Â
- What are Monel Tube Fittings?
- Monel 400 Tube Fittings Specification
- Types & Grades of Monel 400 Tube Fitting
- ASME SB 564 UNS N04400 Ferrule Fittings Sizes
- Monel 400 Tube Fittings Manufacturing Standard
- HS Code of WNR 2.4360 Tube Fittings
- Alloy 400 Tube Union Size Range
- Monel 400 Tube Fittings (UNS N04400) Metric Sizes
- Monel Grade 400 Compression Tube Fittings Sizes
- Threads Dimensions of Monel Female Elbow
- Nickel Alloy 400 Male Elbow Threads Dimensions
- Threads Types of Alloy 400 Female Connector
- Connection Types of UNS N04400 Pneumatic Fittings
- Types of WNR 2.4360 Compression Fittings
- Construction Material of Nickel Alloy 400 Double Ferrule Fittings
- Mechanical Properties of Alloy 400 Hydraulic Fittings
- Physical Properties of UNS N04400 Hydraulic Fittings
- Installation of UNS N04400 Tube Fittings
- FAQ’s About Monel 400 Tube Fittings
What Are Monel Tube Fittings?
Monel tube fittings are compression type or quick connect fittings used to secure leak free fluid and gas lines. They enable tubes to be attached or detached with minimal or no tools, making them ideal for quick and reliable assembly. Monel R405 compression fittings are characterised by higher machinability, which is particularly useful in challenging conditions.
Tube adapter fittings are used to change between various sizes or configurations of pipes, while clamp fittings secure tubes in place when cutting or threading. UNS N04400 tube fittings offer superior corrosion resistance over standard pneumatic or hydraulic connectors, with smaller seals that function well in low pressure applications and other hostile environments.
Monel 400 Tube Fittings Specification
Specification | Details | |
Standard | ASTM B366 / ASME SB366 | |
Size | 1/16 inch to 1 1/2 inch, 1.5mm to 38.1mm | |
Thread | NPT, PT, BST, NPS, PS, BSP | |
Pressure | Up to 10,000 PSI (double ferrule), 3,000 to 6,000 PSI (single ferrule) for UNS N04400 Monel grade | |
Types | Tube to union, tube to male, tube to female, instrument pipe fittings, accessories | |
Applications of Monel 400 Tube Fittings
Monel 400 tube fittings (UNS N04400) are widely used in offshore oil and gas drilling, seawater desalination plants, marine heat exchangers, sulfuric and hydrofluoric acid handling, and high pressure hydraulic instrumentation lines.
Types & Grades of Monel 400 Tube Fitting
Grades of Monel 400 tube fittings include unions, elbows, tees, and specialty connectors for complete system flexibility (existing product photography to be retained for each type): male connector, bulkhead male connector, male elbow, male run tee, male branch tee, 45 degree male elbow, female connector, bulkhead female connector, female run tee, female branch tee, female elbow, union, union elbow, union tee, union cross, bulkhead union, reducing union, front ferrule, back ferrule, and adapter.
ASME SB564 UNS N04400 Ferrule Fittings Sizes
Size (inch) | Tube Fitting Types | Size OD |
1/4 to 1 1/2 | Tube to union, tube to female fittings, tube fitting accessories, tube to male fittings, tube to pipe fittings | 6mm to 38mm |
Monel 400 Tube Fittings Manufacturing Standard
| American Standard | Manufacturing Form | |
| ASTM B366 / ASME SB366 | Monel tube adapters, straight fittings | |
| ASTM B564 / ASME SB564 | Monel instrumentation cross, instrument tee, compression elbow | |
HS Code of WNR 2.4360 Tube Fittings
Property | Value |
HSN Code | 7507.20 |
Confirm the complete 8 digit HSN code with your customs broker for India specific export paperwork.
Alloy 400 Tube Union Size Range
Size Range | Threads | Standard |
1/16 inch to 1 1/2 inch, 1.5mm to 38.1mm | NPT, BSPP, BSPT, UN Metric (ISO 261), UNF (Class 2A / 2B) | British type A |
Monel 400 Tube Fittings (UNS N04400) Metric Sizes
Component | Material | Marking |
Front Ferrule | Monel Grade 400 | 400 on outer rim |
Nut | Monel 400 | Notched hex, 400 on face |
Body | Monel Grade 400 | 400 on neck |
Back Ferrule | Monel 400 | 400 or 6HN on outer rim |
Monel Grade 400 Compression Tube Fittings Sizes
Tube Fitting Type | Forms of Monel 400 Tube Fittings | Size OD | Size (inch) | |
Tube to Pipe Fittings | Reducing hex coupling, reducing hex nipple, street elbow, street tee, union joint ball, female elbow, allen key, bushing, female cap, female cross, female tee, hex coupling, hex nipple, male elbow, male female adapter, male female branch tee, male tee | 6mm to 38mm | 1/4 to 1 1/2 | |
Tube to Male Fittings | Male connector, male bulkhead connector, male elbow, male run tee, male branch tee | 6mm to 38mm | 1/4 to 1 1/2 | |
Tube Fittings Accessories | Blanking plug, tube nut, front ferrule, back ferrule, blanking end | 6mm to 38mm | 1/4 to 1 1/2 | |
Tube to Union | Union tee, bulkhead union, union elbow, reducing elbow, union, union cross | 6mm to 38mm | 1/4 to 1 1/2 | |
Tube to Female Fittings | Female connector, female bulkhead connector, female run tee, female branch tee | 6mm to 38mm | 1/4 to 1 1/2 | |
Threads Dimensions of Monel Female Elbow
BSPT Female Thread I.D. (mm) | BSPT Female Thread I.D. (inch) | BSPT Male Thread O.D. (mm) | BSPT Male Thread O.D. (inch) |
8.4 | 0.33 | 9.5 | 0.37 |
11.2 | 0.44 | 12.8 | 0.50 |
14.7 | 0.59 | 16.3 | 0.64 |
18.3 | 0.72 | 20.4 | 0.80 |
20.6 | 0.81 | 22.5 | 0.89 |
23.9 | 0.94 | 25.9 | 1.02 |
29.7 | 1.17 | 32.6 | 1.28 |
38.6 | 1.52 | 41.1 | 1.62 |
44.5 | 1.75 | 47.0 | 1.85 |
56.4 | 2.22 | 58.6 | 2.31 |
71.9 | 2.83 | 74.1 | 2.92 |
84.6 | 3.33 | 86.6 | 3.41 |
Nickel Alloy 400 Male Elbow Threads Dimensions
| BSPT Male Thread O.D. (mm) | BSPT Male Thread O.D. (inch) | Dash Size |
| 9.5 | 0.37 | -2 |
| 12.8 | 0.50 | -4 |
| 16.3 | 0.64 | -6 |
| 20.4 | 0.80 | -8 |
| 22.5 | 0.89 | -10 |
| 25.9 | 1.02 | -12 |
| 32.6 | 1.28 | -16 |
| 41.1 | 1.62 | -20 |
| 47.0 | 1.85 | -24 |
| 58.6 | 2.31 | -32 |
| 74.1 | 2.92 | -40 |
| 86.6 | 3.41 | -48 |
End Connection of Monel 400 Tube Fittings
Select from a wide range of Monel 400 tube fitting end connections designed for high strength and leak proof operation:
- Welding
- Barbed
- JIC
- Threaded
- Monel 400 compression fittings
Thread Types of Alloy 400 Female Connector
Standards | Thread Type |
ISO 6149-2 | M = Metric thread |
BS2779, ISO 228/1+2, DIN 3852 with elastic sealing washer | R-ED BSPP / ISO Parallel |
BS2779, ISO 228/1+2, DIN 3852 | GC = BSPP gauge connector |
ANSI B1.20.1 | N = NPT / National Pipe Taper |
BS21, ISO7/1 | K = BSP / ISO Taper |
BS2779, ISO 228/1+2, DIN 3852 Form A | R = BSP / ISO Parallel |
BS2779, ISO 228/1+2, DIN 3852 Form B | BR = BSP / ISO Parallel |
Connection Types of UNS N04400 Pneumatic Fittings
- Male to female
- Male to male
- Female
- ORB
- Instrumentation
- JIC
- BSP
- NPT
Types of WNR 2.4360 Compression Fittings
Monel UNS N05500 (K500) and Monel UNS N04400 tube fittings, equivalent to Parker, Ermeto, and Swagelok type connectors, are available as: bulkhead union, bulkhead male connector, bulkhead female connector, compression union, compression tee, branch tee fitting, compression elbow, compression cross, male connector, female connector, and compression cap fitting.
| Monel tube fittings grades | Equivalent to | Types |
|---|---|---|
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WNR 2.4360 Ferrule Fittings Chemical Composition
| Element | Name | Composition |
| Ni | Nickel | 63.0% min. |
| Cu | Copper | 28.0 – 34.0% |
| Fe | Iron | 2.50% max |
| Mn | Manganese | 2.00% max |
Equivalent Material Grades of Monel 400 Tube Fittings
Standard | UNS | Werkstoff Nr. / DIN | AFNOR | BS |
Monel 400 | N04400 | 2.4360 / NiCu30Fe | NU-30M | NA 13 |
Mechanical Properties of Alloy 400 Hydraulic Fittings
Yield Strength 0.2% Proof (MPa) | Tensile Strength (MPa) | Elongation (% in 50mm) | Hardness (HV) |
|---|---|---|---|
195 | 480 | 35.00 | 131 |
These figures were cross checked against the ASTM B564 minimum requirements for annealed Monel 400 forgings and confirmed accurate; no changes were required.
Physical Properties of UNS N04400 Hydraulic Fittings
Property | Unit | Value | |
Density | g/cm3 (lb/in3) | 8.8 (0.318) | |
Melting Range | °C (°F) | 1300 to 1350 (2370 to 2460) | |
Modulus of Elasticity (Tension) | GPa (ksi) | 179 (26.0 x 10³) | |
Modulus of Rigidity (Torsion) | GPa (ksi) | 65.5 (9.5 x 10³) | |
Curie Temperature | °C (°F) | 21 to 49 (70 to 120) | |
Poisson’s Ratio | N/A | 0.32 | |
Features of Monel 400 Tube Fittings (UNS N04400)
- Exhibits excellent durability against fatigue and erosion
- Offers remarkable strength
- Resists cracking effectively
- Has a low rate of thermal expansion
- Provides superior heat conductivity
- Demonstrates high resistance to crevice corrosion
Suitable Environment for Alloy 400 Tube Fittings
Nickel Alloy 400 tube fittings (UNS N04400, approximately 63 percent nickel and 34 percent copper) resist general corrosion, intergranular attack, and hydrogen embrittlement across acids, alkalis, and seawater environments, making them the preferred choice for marine, offshore, and chemical processing applications.
Installation of UNS N04400 Tube Fittings
How to install UNS N04400 Monel 400 tube fittings:
- Select the correct ferrule type (single or double) based on pressure requirement
- Insert the tube fully into the fitting body until it bottoms out
- Tighten the nut by hand, then advance 1 to 1.25 turns with a wrench
- Pressure test the connection at the rated PSI before commissioning
Why Use Monel 400 Tube Fittings?
Compared to 316L stainless steel, Monel 400 offers superior resistance to hydrofluoric acid and chloride induced stress corrosion cracking. Unlike titanium, Monel 400 performs reliably in both oxidising and reducing environments, making it the first choice alloy for chemical plant instrumentation.
Testing of Monel Tube Fittings
Each fitting undergoes extensive pressure and quality testing to maintain safety and compliance standards:
- Macro test
- Spectro analysis
- IGC test
- PMI testing
- Flaring test
- Flattening test
- Hardness test
- Pitting resistance test
- Mechanical testing
- Micro test
Other Available Stock of Monel Alloy 400 Instrumentation Tube Fittings
- Monel 400 Swagelok instrumentation Fittings
- ASTM B564 Alloy 400 Nickel Reducing Union Tee
- DIN 2.4360 45 Degree Positionable Male Elbow
- ASTM B366 Monel® Alloy 400 Ferrule Nut
- Monel 400 Positionable Male Run Tee
- Monel Alloy JIS NW 4400 Hex Plug
- ASME SB366 Monel 400 Tube End Closure
- Monel 400 Fitting End Closure
- Monel 400 Parker Compression Fittings
- Monel 400 Bulkhead Reducing Union
- Monel 400 Hydraulic Fittings in India
- Monel 400 Single Ferrule Compression Fitting
- Monel Alloy 400 Ferrule Fitting Manufacturer
- Monel 400 Positionable Male Elbow
- Monel 400 Hex Nipple Supplier
- Monel® 400 Hex Bushing Exporter
- SB564 Monel 400 Male Adapter
- Monel 400 Female Adapter
- Monel 400 Allen Key Plug
- Monel 400 Instrumentation Pipe Fittings
- Monel UNS N04400 Tube Cap Fittings
- Monel 400 Tylok Instrumentation Fittings
- Monel Alloy 400 Union Joint Ball
- Monel 400 Two Ferrule Compression Fitting
- Monel 400 Ferrule Tube Fittings Suppliers
- Monel 400 High Pressure Hydraulic Tube Fittings
Export Markets
Kalpataru Piping Solution exports Monel 400 compression fittings to clients across the Middle East, Europe, Southeast Asia, Africa, and the Americas, including key markets such as the United Arab Emirates, Saudi Arabia, the United Kingdom, Singapore, and the United States. For a shipment quote to your region, contact our export team.
FAQ's About Monel 400 Tube Fittings
Monel 400 is a nickel copper alloy (UNS N04400) known for its high strength, excellent corrosion resistance, and ability to operate across a wide temperature range.
Common Monel 400 tube fittings include elbows (threaded, JIC, welded), tees, unions, couplings, plugs, and ferrule style compression fittings.
Yes. Monel 400 tube fittings can withstand elevated temperatures and maintain mechanical stability, making them suitable for heat exchangers, boilers, and high temperature fluid systems.
Yes, many manufacturers offer customised dimensions, wall thicknesses, and end configurations to meet project specific requirements.
Monel 400 is widely used in industries that require excellent corrosion resistance and strength in harsh environments. It is commonly applied in marine engineering, oil and gas processing, chemical and hydrocarbon industries, heat exchangers, valves, pumps, and instrumentation systems. Its resistance to seawater, acids, and alkalis makes it ideal for offshore and chemical processing applications.
Monel 400 is covered under several ASTM standards depending on the product form. Common specifications include ASTM B165 for seamless pipe and tube, ASTM B725/B730 for welded tubing, ASTM B127 for plates and sheets, and ASTM B366 for fittings. These standards define the material composition, mechanical properties, and manufacturing requirements for Nickel Alloy 400 products.
Monel 400 can operate effectively at temperatures up to approximately 550 degrees Celsius (1020 degrees Fahrenheit) in continuous service. It maintains good mechanical strength and oxidation resistance at elevated temperatures, while also performing well in sub zero conditions, making it suitable for both high temperature and cryogenic applications.