MONEL 400 (UNS N04400) nickel alloy seamless tubes for condensers
MONEL 400 (UNS N04400) nickel alloy seamless tubes for condensers
MONEL 400 (UNS N04400) nickel-copper alloy seamless tubes are ideal for condensers due to their excellent resistance to seawater, sulfuric acid, and alkaline corrosion. They offer high strength and toughness over a wide temperature range, along with good ductility and resistance to stress corrosion cracking. Their high thermal conductivity also benefits heat exchanger applications. They are widely used in high-stress, high-heat applications such as marine and chemical processing, heat exchangers, and condensers.
What are the specifications for Monel 400 pipe?
This grade of nickel-copper alloy is available in ASTM B165 and B725 specifications. Pipe is available in seamless, welded, electric-resistance-welded, and fabricated forms. ASME SB165 Monel 400 seamless pipe conforms to ASTM, ASME, and API standards and is available in nominal inside diameters ranging from 15 inches to 150 inches.
ASME SB163 MONEL 400 (UNS N04400) Nickel Alloy Seamless Tubing for Heat Exchangers and Condensers
ASME SB163 MONEL 400 (UNS N04400) is a premium nickel-copper alloy seamless tubing designed for critical heat transfer applications in highly corrosive environments. Manufactured in strict accordance with the ASME Boiler and Pressure Vessel Code, this alloy contains 67% nickel and 30% copper, offering excellent resistance to seawater, acids (including hydrofluoric and sulfuric acids), alkalis, and high-temperature steam. Its unique metallurgical structure makes it less susceptible to chloride-ion stress corrosion cracking, while its excellent thermal conductivity (21.8 W/m·K) enables efficient heat transfer. This product is widely used in shell-and-tube heat exchangers, condensers, and other pressure vessels where reliability in corrosive media is critical, particularly in chemical processing, offshore oil and gas, marine engineering, and power generation.
Monel 400 Tubing Heat Exchanger/Condenser Tubes
Monel 400 heat exchanger/condenser tubes, also known as UNS N04400 heat exchanger/condenser tubes, are a copper-nickel alloy with excellent toughness and strength. This grade of heat exchanger exhibits good ductility and corrosion resistance at high temperatures. Furthermore, it can withstand temperatures up to 540°C in oxidizing atmospheres and maintains good performance at low temperatures. These heat exchangers/condensers are primarily used to transfer heat energy from a hotter gas/liquid to a cooler gas/liquid. Therefore, these heat exchangers/condensers can transport both liquid solutions and gases. These heat exchangers are easily hot-worked and cold-formed. Furthermore, they are annealed at 870°C to 980°C and weldable using a variety of welding processes.
Monel 400 heat exchanger tubes are specifically designed to provide efficient heat transfer and long service life in so-called "corrosive" thermal environments. Not only do these tubes offer the thermal conductivity required for these conditions, but they also resist stress corrosion cracking, pitting, and fatigue, even under extreme temperature fluctuations, unlike most other metals. Combined with their strong mechanical properties, it's no surprise that Monel 400 heat exchanger tubes are a popular solution for a wide range of applications, including marine systems, petrochemical plants, and power generation units.
Monel 400 Condenser round Tubes Equivalent Grades
| 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 |
Monel Alloy 400 Condenser U Shaped Heat Exchanger Tubes Chemical Composition
| Element | Alloy 400 |
| C | 0.30 max |
| Mn | 2.00 max |
| Si | 0.50 max |
| S | 0.024 max |
| Cu | 28.00 – 34.00 |
| Fe | 2.50 max |
| Ni | 63.00 min |
Monel 400 Heat Exchanger Tubes Mechanical & Physical Properties
| Element | Monel Alloy 400 |
| Density | 8.8 g/cm3 |
| Melting Point | 1350 °C (2460 °F) |
| Tensile Strength | Psi – 80,000 , MPa – 550 |
| Yield Strength (0.2%Offset) | Psi – 35,000 , MPa – 240 |
| Elongation | 40 % |
Monel 400 Tubing Sizes
| WT | Sizes (OD) |
|---|---|
| .020 | 1/16" , 3/16" , 1/8", 1/4" , 3/8" , 5/16" |
| .049 | 3/16" , 1 5/8", 1/4" , 3/8" , 5/16" , 1/2", 16", 7/8" , 5/8" , 1" , 3/4", 1 1/8" , 2 1/4", 2" |
| .016 | 1/8" , 3/16" |
| .028 | 1/8" , 3/16" , 1/4" , 1/2" , 5/16" , 3/8", 3/4" , 1" , 1 1/2" , 2" |
| .012 | 1/8" |
| .035 | 1/8" , 3/16" , 1/4", 7/16" , 1/2" , 16" , 5/16" , 5/8" , 3/4" , 7/8", 1", 1 5/8" , 2 1/4" , 2" |
| .065 | 1/4", 3/8" , 5/16" , 1/2" , 3/4", 16" , 5/8" , 7/8" , 1" , 1 1/4" , 1 5/8", 2" , 3" , 1 3/4" , 2 1/2" |
| .095 | 1/2" , 5/8" , 1" , 1 1/4" , 1 1/2" , 2" |
| .083 | 1/4" , 3/8" , 1/2", 5/8" , 2 1/2" , 3/4" , 1 1/4", 7/8" , 1 5/8" , 1" , 1 1/2", 2" , 1 7/8",3" |
| .109 | 1/2" , 3/4" , 1" , 1 1/4" , 1 1/2" , 2" |
| .134 | 1" |
| .125 | 3/4" , 1" , 1 1/4" , 1 1/2" , 2" , 3" , 3 1/4" |
| .250 | 3" |
| .120 | 1/2" , 5/8" , 7/8" , 3/4", 1" , 1 1/2" , 1 1/4", 2" , 2 1/2" , 2 1/4", 3" |
| .375 | 3 1/2" |
| .010 | 1/16" , 3/16", 1/8" |
Condenser Applications
Marine and Offshore Applications:
Its resistance to high-velocity seawater corrosion makes it a preferred material for marine applications, including condenser tubes in power plants and other large industrial systems.
Chemical and Hydrocarbon Processing:
This alloy is used in chemical equipment and hydrocarbon processing applications, including condensers and heat exchangers.
Heat Exchangers:
MONEL 400's combination of corrosion resistance and thermal conductivity makes it an ideal material for heat exchangers and deaerator heaters.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications. We also offer customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneesteel.com.
