ASTM B366 Monel 400 Fittings are high performance nickel-copper alloy pipe fittings made for good corrosion resistance, high strength and durability in maritime, chemical, oil & gas and heat exchanger applications. Monel 400 Fittings are also known as Monel Alloy 400 Fittings or Monel UNS N04400 Fittings. These fittings are commonly used in high pressure and seawater applications because to their excellent resistance to acids, alkalis and saltwater corrosion. Typical goods include elbows, tees, reducers, stub ends and caps per ASME B16.9 and ASTM B366 requirements.
Introduction to Monel 400 Fittings
We produce and provide a comprehensive selection of Monel 400 Pipe Fittings suited for severe industrial situations where corrosion resistance and mechanical strength are required. Our fittings are made according to international standards and are suited for offshore drilling, petrochemicals, maritime engineering, condensers, chemical processing plants, and similar industries.
Nickel Copper Alloy 400 Fittings are manufactured from a solid solution alloy consisting mainly of nickel and copper. This composition is very resistant to hydrofluoric acid, sulfuric acid, alkalis, sea water and high temperature oxidation.
Our product range includes:
- Monel 400 Elbow
- Monel 400 Tee
- Monel 400 Reducer
- Monel 400 Stub End
- Monel 400 Pipe Cap
- Monel 400 Cross
- Monel 400 Bend
- Long Radius & Short Radius Elbows
As an experienced Monel 400 Buttweld Pipe Fittings Manufacturer, we ensure dimensional accuracy, smooth surface finish, and reliable performance under pressure.
Table of Contents
- ➤ What is ASTM B366 Monel 400?
- ➤ Key Features of Monel Alloy 400 Fittings
- ➤ Types of Monel Alloy 400 Fittings
- ➤ ASTM B366 Monel 400 Fittings Specifications
- ➤ Chemical Composition of Monel UNS N04400 Fittings
- ➤ Mechanical Properties of Monel 400 Buttweld Fittings
- ➤ Dimensions of Monel 400 Pipe Fittings
- ➤ Monel 400 Fittings Weight Chart
- ➤ Applications of Monel 400 Buttweld Fittings
- ➤ Why Choose Our Monel 400 Pipe Fittings?
What is ASTM B366 Monel 400?
ASTM B366 UNS N04400 Buttweld Fittings are pipe fittings manufactured from Monel Alloy 400 under ASTM B366 specification. These fittings are intended for moderate to high-temperature service and applications requiring superior resistance to seawater and corrosive chemicals.
Equivalent Specifications| Specification | Description |
|---|---|
| ASTM B366 | Factory-Made Wrought Nickel Alloy Fittings |
| ASME SB366 | Nickel Alloy Buttweld Fittings |
| UNS N04400 | Monel 400 Material Grade |
| Werkstoff Nr. | 2.4360 |
Key Features of Monel Alloy 400 Fittings
- Excellent Corrosion Resistance: Monel Alloy 400 Fittings offer exceptional resistance to seawater, acids, alkalis, and chloride-rich environments.
- High Strength at Elevated Temperatures: These fittings maintain structural integrity even under extreme pressure and temperature conditions.
- Superior Weldability: ASTM B366 Monel 400 Fittings can be easily welded and fabricated for complex industrial piping systems.
- Long Service Life: Due to their robust nickel-copper composition, these fittings provide excellent durability and reduced maintenance costs.
- High Pressure Performance: Our High Pressure Monel 400 Fittings are designed for critical process industries where reliability is essential.
Types of Monel Alloy 400 Fittings
➤ Monel 400 Pipe Elbow
As a trusted Monel Pipe Elbow Manufacturer, we supply 45°, 90°, and 180° elbows for efficient flow direction changes in piping systems.
➤ Monel 400 Tee
Used for branch connections in pipelines while maintaining flow integrity under pressure.
➤ Monel 400 Reducer
Designed to connect pipes of different diameters while reducing turbulence and pressure loss.
➤ Monel 400 Stub End
Suitable for lap joint flange applications requiring easy dismantling and maintenance.
➤ Monel 400 Pipe Cap
Used to terminate pipe ends securely in high-pressure systems.
ASTM B366 Monel 400 Fittings Specifications
| Specification | Details |
|---|---|
| Material Grade | Monel 400 |
| UNS Number | N04400 |
| Standard | ASTM B366 / ASME SB366 |
| Size Range | ½” NB to 48” NB |
| Schedule | SCH 10 to SCH XXS |
| Type | Seamless / Welded / Fabricated |
| Pressure Rating | High Pressure |
| Form | Elbow, Tee, Reducer, Cap, Stub End |
| End Connection | Buttweld |
| Manufacturing Standard | ASME B16.9, B16.28, MSS SP-43 |
Chemical Composition of Monel UNS N04400 Fittings
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | 63 min |
| Copper (Cu) | 28 – 34 |
| Iron (Fe) | 2.5 max |
| Manganese (Mn) | 2.0 max |
| Carbon (C) | 0.3 max |
| Silicon (Si) | 0.5 max |
| Sulfur (S) | 0.024 max |
Mechanical Properties of Monel 400 Buttweld Fittings
| Property | Value |
|---|---|
| Tensile Strength | 550 MPa |
| Yield Strength | 240 MPa |
| Elongation | 35% |
| Hardness | 65 HRB |
| Density | 8.80 g/cm³ |
| Melting Range | 1300 – 1350°C |
Dimensions of Monel 400 Pipe Fittings
90 Degree Long Radius Elbow Dimensions| NPS | Center to End (A) |
|---|---|
| 1/2" | 38 mm |
| 3/4" | 38 mm |
| 1" | 38 mm |
| 1 1/2" | 57 mm |
| 2" | 76 mm |
| 3" | 114 mm |
| 4" | 152 mm |
Tee Dimensions
| NPS | Center to End |
|---|---|
| 1/2" | 38 mm |
| 1" | 51 mm |
| 2" | 64 mm |
| 3" | 76 mm |
| 4" | 102 mm |
Monel 400 Fittings Weight Chart
90° LR Elbow Weight Chart| Size | SCH 40 Weight |
|---|---|
| 1/2" | 0.08 kg |
| 1" | 0.22 kg |
| 2" | 0.65 kg |
| 3" | 1.45 kg |
| 4" | 2.90 kg |
Tee Weight Chart
| Size | SCH 40 Weight |
|---|---|
| 1/2" | 0.10 kg |
| 1" | 0.30 kg |
| 2" | 0.90 kg |
| 3" | 1.80 kg |
| 4" | 3.50 kg |
Applications of Monel 400 Buttweld Fittings
The superior performance characteristics of ASME SB366 Monel 400 Pipe Fittings make them suitable for several industries:
- Marine Engineering
- Offshore Oil & Gas
- Petrochemical Plants
- Heat exchangers
- Power Generation
- Chemical Processing
- Desalination Plants
- Pulp & Paper Industry
- Condensers and Boilers
Related Monel Steel Fittings
We also supply:
- Monel Alloy Fittings
- Monel Buttweld Fittings
- ASTM B366 Monel 400 Buttweld Fittings
- ASTM B366 Monel K500 Buttweld Fittings
- ASTM B564 Monel 400 Forged Fittings
- ASTM B564 Monel K500 Forged Fittings
Quality Testing of ASTM B366 UNS N04400 Buttweld Fittings
To ensure reliability and long-term performance, our fittings undergo:
- PMI Testing
- Hydrostatic Testing
- Radiography Testing
- Ultrasonic Testing
- Intergranular Corrosion Testing
- Flattening Test
- Flaring Test
- Dimensional Inspection
These tests ensure compliance with ASTM and ASME standards.
Why Choose Our Monel 400 Pipe Fittings?
We focus on delivering high-quality piping solutions that meet global industrial requirements. Every fitting undergoes strict quality testing for dimensional accuracy, corrosion resistance, and pressure handling capability.
Our Advantages- Complete Material Traceability
- Third Party Inspection
- Custom Sizes Available
- Fast Delivery
- Competitive Pricing
- International Quality Standards
- Export Packaging
As a reliable Monel 400 Buttweld Fittings Manufacturer, we maintain ready stock for urgent industrial requirements.
Frequently Asked Questions
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