Monel Pipe Fittings
High-performance Monel pipe fittings made for harsh conditions with corrosive fluids, seawater, high pressures, and high temperatures are produced and supplied by Stellanox Steel. These fittings, which are perfect for marine, offshore, chemical, oil and gas, and power plant pipe systems, are made of high-quality Monel 400 and Monel K500 and have remarkable resistance to acids, alkalis, and chloride-induced corrosion.
Our Monel pipe fittings meet international standards such as ASME B16.9, B16.11, and ASTM B366 and come in butt weld, socket weld, threaded, and flanged varieties.
What are Monel Pipe Fittings?
In situations where traditional alloys fail because of exposure to saltwater, acidic fluids, or thermal cycling, Monel Pipe Fittings are utilised to join, reroute, or terminate pipe segments. Even in the most demanding and corrosive situations, these fittings provide leak-proof performance by combining the strength and durability of Monel with precise engineering.
They are perfect for piping systems with small to medium diameters found in desalination plants, chemical plants, and marine infrastructure.
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Stainless Steel |
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Carbon Steel |
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Duplex Stainless Steel |
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Super Duplex Stainless Steel |
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Alloy Steel |
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Titanium |
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Hastelloy |
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Inconel |
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Monel |
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Aluminium |
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Copper |
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Pure Nickel |
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Flanges |
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Forged Fittings |
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Valves |
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Fasteners |
Key Features
- Superior Resistance to Seawater, Hydrofluoric & Sulfuric Acids
- High Tensile and Yield Strength
- Withstands Extreme Temperature Fluctuations
- Available in Butt Weld, Socket Weld, Threaded, and Flanged Ends
- Non-Magnetic in Annealed Condition
- Complies with ASME, ASTM, DIN, ISO, and NACE Standards
Grades
- Monel 400 Pipe Fittings
- Monel K500 Pipe Fitings
Specification
| Property | Details |
|---|---|
| Product | Monel Pipe Fittings |
| Grades Available | Monel 400, Monel K500 |
| Fitting Types | Elbows, Tees, Reducers, Crosses, Caps, Stub Ends, Unions, Couplings |
| Connection Types | Butt Weld, Socket Weld, Threaded (NPT/BSP), Flanged |
| Size Range | ½" NB to 24" NB |
| Pressure Ratings | 150#, 300#, 600#, 900# |
| Standards | ASME B16.9, B16.11, MSS SP-43, ASTM B366, EN 10253 |
| Testing & Certification | EN 10204 3.1/3.2, PMI, Hydro, IGC, UT, NACE MR0175 |
Chemical Composition
| Element | Composition (%) |
|---|---|
| Nickel (Ni) | ≥ 63.0 |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | 2.0 – 2.5 |
| Manganese (Mn) | ≤ 2.0 |
| Carbon (C) | ≤ 0.30 |
| Silicon (Si) | ≤ 0.50 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 550 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | ≥ 35% |
| Hardness | ≤ 65 HRB |
| Density | ~8.80 g/cm³ |
Equivalent Grades
| Standard | Equivalent Grade |
|---|---|
| ASTM | B366 |
| UNS | N04400, N05500 |
| DIN / EN | 2.4360, 2.4375 |
| ISO | NiCu30Fe |
Weight
| Fitting Type | Size (inches) | Approx. Weight (kg) | Connection Type |
|---|---|---|---|
| 90° Elbow LR | 1" | 0.28 | Butt Weld |
| 90° Elbow LR | 2" | 0.63 | Butt Weld |
| Equal Tee | 2" | 0.82 | Butt Weld |
| Equal Cross | 2" | 1.20 | Butt Weld |
| Concentric Reducer | 3" × 2" | 1.60 | Butt Weld |
| End Cap | 2" | 0.40 | Butt Weld |
| Stub End | 3" | 1.10 | Lap Joint |
| Threaded Coupling | 1" | 0.44 | Threaded |
| Threaded Coupling | 2" | 0.92 | Threaded |
| Union (Threaded/SW) | 1" | 0.68 | Threaded/SW |
| Union (Threaded/SW) | 2" | 1.38 | Threaded/SW |
Applications
- Marine Engineering: Seawater piping, condensers, saltwater scrubbers
- Chemical Processing: Acid handling lines, reaction systems, evaporator connections
- Oil & Gas: Offshore pipeline manifolds, downhole tool fittings, separator systems
- Power Generation: Boiler feed lines, cooling loops, condensate return
- Nuclear Plants: Heat recovery piping, containment systems
- Desalination Plants: High-salinity brine lines, reverse osmosis feed lines
Benefits
- Immune to Chloride, Brine, Acid & Alkali Attack
- Performs in High-Pressure and High-Heat Applications
- Long-Term Performance = Low Lifecycle Cost
- Weldable, Machinable, and Easy to Install
- Globally Certified for Mission-Critical Piping Systems
2025 Stellanox Steel |