Monel 400 is 67% nickel and 30% copper, allowing industries to employ socket weld fittings that persist in tough environments where ordinary stainless steel corroded away in a matter of months. Saltwater, powerful hydrofluoric acid and alkaline liquids destroy 316 stainless, thus chemical firms, sea platforms and water treatment plants use this metal. This metal is used by workers in socket weld sections that join pipes carrying corrosive or high-pressure liquids or gases.
Corrosion Resistance: Monel 400 is highly resistant to seawater and is not as susceptible to pitting and crevice corrosion as austenitic stainless grades. Offshore constructions can withstand decades of ocean exposure without threat. This remarkable durability is likewise valid on hydrofluoric acid and on other alkaline process solutions throughout an extremely wide concentration range.
Table Of Content
Strength & Ductility: Tensile strength is 550 to 690 MPa depending on temper. Elongation is normally >35% in annealed condition. That combination allows fabricators to cold-form fittings without cracking, while yet fulfilling pipeline pressure ratings. Structural integrity is maintained after repeated heat cycling.
Thermal Conductivity: Monel 400 has a thermal conductivity of approximately 21.8 W/m.K. This property is crucial when designing heat exchangers and condensers. Good heat conduction through the fitting body helps to keep process temperatures up and reduces the energy load needed to run continuously.
Weldability: Socket weld geometry is dependent on a clean leak-free joint between fitting and pipe. Monel 400 welds without the carbide precipitation difficulties that plague other nickel alloys, making joins that pass hydrostatic testing the first time out.
Stress-Corrosion Cracking Resistance: Combined mechanical load and corrosive exposure cracks in many alloys from the inside out. Monel 400 resists this failure mode, which is why platforms and reactors under constant vibration and chemical attack still specify it after decades of field use.
Low Magnetic Permeability: Near-zero magnetic permeability makes this alloy useful in MRI chamber construction and electronic housings, where stray magnetic interference isn't an option.
Versatile Applications: Piping systems, pumps, valves, and instrumentation across chemical processing, marine engineering, oil and gas, and desalination plants use Monel 400 socket weld fittings as standard components.
ASTM B564 / ASME SB564
ASME 16.11, MSS SP-79, 83, 95, 97, BS 3799
1/8” NB to 4” NB (Socketweld, Forged)
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
Socketweld Fittings, Forged Fittings
EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
90º Elbows, 45º Elbows, Tees, Cross, Couplings, Reducer Inserts, Pipe Nipple, Unions
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| Monel 400 | 2.4360 | N04400 | NW 4400 | NA 13 | МНЖМц 28-2,5-1,5 | NU-30M | NiCu30Fe |
| 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 |
| 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 % |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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