Nickel Alloy Forged Pipe Fitting ASME SB564 UNS N04400 Monel 400 Thread Coupling
ASTM B564 Forged Pipe Fitting Monel 400 / UNS U04400 Nickel Alloy Thread Coupling
A forged thread coupling is a type of pipe fitting manufactured through the forging process, featuring internal threads (NPT) at both ends. Its primary function is to connect two pieces of externally threaded pipe of the same nominal size in a straight run, providing a pressure-tight mechanical joint without welding.
In summary, a forged thread coupling is a robust, practical solution for many piping connections where welding is not desired or practical. Its performance hinges on correct material selection, proper installation, and appropriate application within its design limitations.
Specification
| Type | Thread Coupling, Thread Half Coupling, Reducing Coupling |
| Specification | ASTM B564/ASME SB564 Monel 400 |
| Other Pattern | Weldolet, socketolet, threadolet, nipolet, latrolet, elbowolet |
| Size | 1/8" - 4" |
| Class | 3000#, 6000#, 9000# |
| Dimension | ANSI/ASME B16.11, MSS SP 97, MSS SP 83, MSS SP 95, MSS SP 97 |
| Application | Industry, Natural Gas , Petroleum, Gas And Oil Pipes, Chemical |
ASME SB564 Monel 400 Nickel Alloy Forged Fitings Chemical Composition
| Grade | C | Mn | Si | S | Cu | Fe | Ni |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.024 max | 28.00 – 34.00 | 2.50 max | 63.00 min |
ASME SB564 Monel 400 Nickel Alloy Forged Fitings Mechanical Properties
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| Monel 400 | 8.8 g/cm3 | 1350 °C (2460 °F) | Psi – 80,000 , MPa – 550 | Psi – 35,000 , MPa – 240 | 40 % |
Common Materials of forged fittings
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Carbon Steel: ASTM/ASME A105 (general service)
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Stainless Steel: ASTM/ASME A182 F304/F304L, F316/F316L (corrosion resistance)
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Alloy Steel: ASTM/ASME A182 F11, F22 (high-temperature service)
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Nickel Alloys: Monel 400 (SB564), Inconel 600/625, Hastelloy C276 (severe corrosion/heat)
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Duplex/Super Duplex Stainless: A182 F51/F53/F55 (high strength & chloride resistance)
Applications
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Low/Medium Pressure Piping Systems: Where welded joints are impractical.
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Maintenance & Repair: Easy installation/disassembly for modification or repair.
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Instrumentation Lines: Small-bore tubing and gauge connections.
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Temporary Installations: Construction sites, test setups.
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Systems Prohibiting Welding: Hazardous areas or specific process requirements.
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Oil & Gas, Chemical, Water, HVAC: Common in utility and process piping.
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