Premium Monel 400/K500 Forged Pipe Fittings by Ratnadeep Steel & Engg. Co.
Ratnadeep Steel & Engg. Co. is a trusted manufacturer, exporter, & supplier of Monel 400 and Monel K500 Forged Pipe Fittings. Manufactured from high-performance nickel-copper alloys, these forged fittings offer outstanding resistance to corrosion in seawater, hydrofluoric acid, alkalis, and a wide range of aggressive chemical environments. Monel alloys are widely recognized for their excellent strength, toughness, and durability across both sub-zero and elevated temperature conditions.
Monel 400 provides exceptional resistance to general corrosion and stress corrosion cracking, while Monel K500, a precipitation-hardened alloy, delivers higher mechanical strength, superior fatigue resistance, and excellent wear properties. These characteristics make Monel forged fittings ideal for demanding applications in marine engineering, offshore oil & gas platforms, chemical processing plants, heat exchangers, and pump and valve systems. Our Monel forged fittings are precision-machined and available in threaded and socket weld connections to ensure leak-proof joints and long-term service reliability.
Designed for compact installations, high pressure ratings, and superior structural integrity, our Monel 400 / K500 forged pipe fittings are widely used in seawater handling systems, desalination plants, hydrocarbon processing units, pressure vessels, and high-stress industrial piping networks. Choose Ratnadeep Steel & Engg. Co. for premium-quality Monel forged fittings that comply with international standards and stringent quality control requirements.
- Monel 400/K500 Socket Weld Elbow
- UNS N04400 / N05500 Threaded Elbow
- DIN 2.4375 Forged Elbow
- ASME SB564 Monel Alloy 400/K500 45° Threaded Elbow
- Monel 400 90° Forged Elbow
- ASME SB564 Monel K500 Socket Weld Tee
- ASTM B564 Monel 400 Forged Equal Tee
- DIN 2.4360 Reducing Tee
- UNS N05500 Unequal Tee
- Alloy 400 Threaded Equal Tee
- Monel Alloy 400 Threaded Equal Cross
- UNS N04400 / DIN 2.4360 Forged Cross
- ASME SB564 Alloy K500 Socket Weld Equal Cross
- Monel 400 Threaded Cross
- Alloy K500 Forged Unequal Cross
- DIN 2.4360 Threaded Full Coupling
- UNS N04400 Forged Full Coupling
- ASME SB564 Monel K500 Socket Weld Full Coupling
- ASTM B564 Alloy 400 Full Coupling
- ASTM B564 Monel 400/K500 Socket Weld Half Coupling
- Alloy UNS N04400 / N05500 Half Coupling
- ANSI B16.11 Monel 400 Threaded Half Coupling
- UNS N04400 Forged Pipe End Cap
- Monel 400 Threaded Pipe Cap
- ASTM B564 Monel 400/K500 Socket Weld Pipe Cap
- ASME SB564 Monel Alloy K500 Forged Pipe End Cap
- UNS N04400 Socket Weld Union
- ANSI B16.5 Monel 400 Union
- ASTM B564 Alloy 400/K500 Threaded Union
- ASME SB564 Monel 400/K500 Forged Union
- UNS N04400 Bushing
- B16.36 Monel 400 Hex Head Bushing
- ASTM B564 Monel 400/K500 Threaded Bushing
- ASME SB564 Alloy 400/K500 Forged Threaded Bushing
- UNS N04400 Threaded Nipple
- B16.36 Alloy 400 Socket Weld Nipple
- ASTM B564 Monel K500 Swage Nipple
- ASME SB564 Alloy K500 Hex Nipple
- Monel 400/K500 Screwed Pipe Nipple
CHEMICAL COMPOSITION OF MONEL 400/K500 FORGED PIPE FITTINGS
| Grade | Ni | Fe | C | Mn | Si | Cu | Al | Ti | S |
|---|---|---|---|---|---|---|---|---|---|
| Monel 400 | 63.0-70.0 | 2.50 max | 0.3 max | 2.00 max | 0.50 max | Remainder | – | – | 0.024 max |
| Monel K500 | 63.0 min | 0.5-2.0 | 0.25 max | 1.5 max | 0.5 max | 27.0-33.0 | 2.3-3.15 | 0.35-0.85 | 0.010 max |
MECHANICAL PROPERTIES OF ASME SB366 MONEL FORGED PIPE FITTINGS
| Grade | Tensile (ksi) | 0.2% Yield (ksi) | Elongation % | Hardness (HRb) |
|---|---|---|---|---|
| Monel 400 | 75 to 90 | 25 to 50 | 60 to 35 | 60 to 80 |
| Monel K500 | Psi – 160,000, MPa – 1100 | Psi – 115,000, MPa – 790 | 20% | – |
SPECIFICATION OF MONEL 400/K500 FORGED FITTINGS
| Specifications | ASTM B564 / ASME SB564 |
|---|---|
| Dimension Standard | ASME B16.11, MSS-SP-79, MSS-SP-83, MSS-SP-95, MSS-SP-97, BS3799 |
| Size | 1/8″ NB to 4″ NB |
| Type | Socketweld Fittings, Screwed-Threaded Fittings (NPT or PT Type) |
| Rating Pressure | Threaded End – 2000 / 3000/ 6000 LBS. Socket-weld End – 3000 / 6000/ 9000 LBS. |
400/K500 MONEL ASTM B366 FORGED FITTINGS EQUIVALENT GRADES
| STANDARD | UNS | WNR. | EN | JIS | GOST | AFNOR | BS |
|---|---|---|---|---|---|---|---|
| Monel 400 | N04400 | 2.4360 | NiCu30Fe | NW 4400 | MHXMu 28-2,5-1,5 | NU-30M | NA 13 |
| Monel K500 | N05500 | 2.4375 | – | – | – | – | – |
PHYSICAL PROPERTIES OF MONEL 400 & K500 FORGED FITTINGS
| Property | Monel 400 | Monel K500 |
|---|---|---|
| Density @ Room Temperature | 0.318 lb/in³ | 8.43 g/cm³ (0.305 lb/in³ approx) |
| Elastic/Young’s Modulus | 26.0 × 10⁶ psi | 179 × 10³ N/mm² |
| Specific Heat @ 20°C (68°F) | 0.102 Btu/lb/°F | 418 J·kg⁻¹·°K⁻¹ |
| Melting Point | 2370°F to 2460°F (1300°C to 1350°C) | – |
| Thermal Conductivity @ 20°C (68°F) | 151 Btu·in/h·ft²·°F | 17.5 W·m⁻¹·°K⁻¹ |
| Electrical Resistivity @ 20°C (68°F) | 0.511 μΩ·m | 0.62 μΩ·m |
| Mean Coefficient of Thermal Expansion (20-100°C) | – | 13.4 × 10⁻⁶ °K⁻¹ |
| Magnetic Permeability @ 20°C | – | <1.005 |
| Curie Temperature | – | -90°C |
💡 Practical Difference in Use
Use Monel 400 / K500 Forged Pipe Fittings when: superior resistance to seawater corrosion, hydrofluoric acid, alkalis, and reducing chemical environments is required along with high mechanical strength. Monel nickel-copper alloys offer excellent toughness, durability, and pressure-handling capability across a wide temperature range. → Example: marine engineering, offshore oil & gas platforms, desalination plants, chemical processing units, pump and valve assemblies, and high-pressure systems.
Applications of Monel 400 / K500 Forged Pipe Fittings
Monel Forged Pipe Fittings are designed for compact, high-strength connections in corrosive, marine, and high-stress service conditions.
- Marine & Offshore Industries: Seawater lines, offshore piping, and shipboard systems.
- Chemical Processing: Acid, alkali, and aggressive chemical handling systems.
- Oil & Gas Systems: Valves, manifolds, pressure piping, and instrumentation connections.
When to Choose Monel 400 / K500 Forged Fittings?
These Monel forged grades are ideal for applications requiring compact design, high pressure resistance, and long-term reliability in harsh operating environments.
Choose Monel 400 / K500 when:
- Continuous exposure to seawater, brine, or marine atmospheres exists
- Resistance to hydrofluoric acid and alkaline media is critical
- High mechanical strength and fatigue resistance are required (Monel K500)
- Threaded or socket-weld connections are preferred
- Used in offshore, marine, chemical, or oil & gas installations
Industries That Use Monel 400 / K500 Forged Pipe Fittings
Monel forged fittings are widely used where corrosion resistance, strength, and leak-free connections are essential.
Ideal for compact, high-strength marine piping systems.
Uses
Seawater lines, offshore platforms, and marine equipment.
Why Monel?
Outstanding resistance to seawater corrosion and stress corrosion cracking.
Suitable for aggressive chemical service.
Uses
Chemical dosing lines, reactors, and acid handling systems.
Why Monel?
Excellent resistance to hydrofluoric acid, alkalis, and reducing agents.
Preferred for high-pressure forged components.
Uses
Valves, pumps, manifolds, and pressure control systems.
Why Monel?
High strength and durability under extreme pressure and corrosive conditions.
Usage Guide for Monel 400 / K500 Forged Pipe Fittings
Directional flow change in high-pressure small bore piping.
Choose Socket Weld Elbow when
- 90° directional change is required
- Compact and leak-proof joint is critical
- Used in high-pressure marine or offshore systems
- Superior corrosion resistance is required
Branch flow distribution in compact forged piping layouts.
Choose Tee when
- Equal or reducing branch connection is required
- High corrosion resistance is essential
- Threaded or socket weld design is preferred
- Used in marine, offshore, or chemical plants
Four-way flow distribution in high-pressure corrosive service lines.
Choose Cross when
- Multiple branch connections are required
- High-strength threaded or socket weld joints are needed
- System is exposed to seawater or aggressive chemicals
- Used in offshore and marine piping networks
Joins two pipes in high-strength corrosive service lines.
Choose Full Coupling when
- Pipe extension or repair is required
- Strong threaded or socket weld joint is needed
- Used in offshore and chemical processing plants
- High pressure and corrosion resistance are critical
Branch outlet connection for instruments and small bore piping.
Choose Half Coupling when
- Pipe-to-equipment connection is required
- High pressure and corrosion resistance are needed
- Used in marine and oil & gas systems
- Socket weld or threaded joint is preferred
Seals pipe ends in seawater and corrosive service conditions.
Choose Pipe Cap when
- Pipe ends need permanent or temporary closure
- System undergoes pressure testing
- Leak-proof threaded or socket weld sealing is required
- Used in marine or offshore pipelines
Detachable joint for easy maintenance in corrosive environments.
Choose Union when
- Frequent dismantling is required
- Corrosion-resistant threaded connection is essential
- Used near pumps, valves, or instruments
- Marine and offshore systems demand reliability
Threaded size reduction in compact piping assemblies.
Choose Bushing when
- Pipe size reduction is required
- Threaded connections are used
- High corrosion resistance is necessary
- Installed in marine or chemical service lines
Short threaded connection for compact, high-strength piping systems.
Choose Nipple when
- Close pipe-to-pipe or pipe-to-valve connection is required
- System operates in seawater or corrosive environments
- High mechanical strength and leak resistance are essential
- Used in marine, offshore, or chemical piping
Our Forged Pipe Fittings are manufactured using advanced forging processes and undergo extensive quality checks to ensure flawless dimensional accuracy, durability, and long service life. Each fitting is thoroughly inspected using key NDT techniques such as radiographic testing (RT), ultrasonic testing (UT), hydrostatic testing, and visual/dimensional examination. We also perform detailed chemical composition analysis and mechanical property testing to ensure material compliance with strict industry standards.
Throughout the forging and finishing stages, every forged fitting is monitored closely to eliminate defects such as misalignment, surface irregularities, and wall-thickness variations. This ensures perfect joint integrity and high-performance reliability in pipelines carrying high temperatures, pressures, and corrosive media. All our forged fittings fully comply with ASME, ASTM, MSS-SP, and related global specifications, making them a preferred choice for critical piping systems worldwide.
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