Monel 400 Pipes & Tubes
Amardeep Steel Centre supplies premium Monel 400 Pipes & Tubes for chemical processing, marine service, oil and gas, heat exchangers, and other demanding industrial applications. Monel 400 is valued for its nickel-copper chemistry, high strength, excellent ductility, and dependable resistance to seawater, alkalis, and many acidic environments.
What is Monel 400?
Monel 400 is a solid-solution nickel-copper alloy containing roughly 63% nickel minimum and 28% to 34% copper, with controlled additions of iron, manganese, carbon, and silicon. It maintains good mechanical properties across a broad temperature range and is commonly selected where chloride exposure, brine, hydrofluoric acid, or alkaline media can attack conventional materials.
Monel 400 Specifications and Standards
Monel 400 pipes and tubes are supplied in seamless, welded, ERW, EFW, fabricated, hydraulic, boiler, heat exchanger, and condenser tube forms. They are available in multiple sizes, wall thicknesses, finishes, end preparations, and lengths to suit project-specific requirements.
| ASTM B163 Alloy 400 Tubing Standards | ASTM B163/ ASME SB163, ASTM B730/ ASME SB730 UNS 4400 Tubing |
| ASTM B163 Alloy 400 Seamless Tube Size | 3.35 mm OD To 101.6 mm OD |
| ASTM B163 Alloy 400 Welded Tube Size | 6.35 mm OD To 152 mm OD |
| ASTM B730 Monel 400 Tubing Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Inconel WERKSTOFF NR. 2.4360 Tube wall thickness | 0.020" –0.220", (special wall thicknesses available) |
| Monel UNS N04400 Tubing Length | Single Random, Double Random, Standard & Cut length Tube |
| Inconel WERKSTOFF NR. 2.4360 Tubing Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Form | ‘U’ bent, Hollow, Hydraulic, LSAW, Boiler, Straight Tube, Tube Coil, Round, Rectangular, Square Etc |
| Types of 400 Alloy Tubing | Seamless, ERW, EFW, Welded, Fabricated Tube / Tubing |
| 400 Alloy Tube End | Plain End, Beveled End, Treaded Tube |
| Marking | All ASTM B163 Monel 400 Tubing are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer’s request.) |
| Application & uses of Monel 400 Tube | Oil Tube, Gas Tube, Fluid Tube, Boiler Tube, Heat exchanger Tube, |
| Value Added Service | Draw & Expansion as per required Size & Length, Polish (Electro & Commercial) Annealed & Pickled Bending, Machining Etc. |
| Specialize in | ASTM B163 Monel 400 Capillary Tube & Other Odd Size Monel NCF 400 Heat Exchanger & Condenser Tube |
| Test Certificate | Manufacturer Test Certificate Laboratory Test Certificate from Govt. Approved Lab. Under Third Party Inspection |
| Manufacturers of Monel 400 Tube |
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| We can also cut, thread, and groove Monel NCF 400 Tube to meet your specifications. Monel 400 Tube Dimension ANSI/ ASME B36.10, B36.19, B2.1 | |
Monel 400 Chemical Composition
The chemical composition of Monel 400 gives the alloy its characteristic corrosion resistance, toughness, and stability in aggressive process environments.
| Grade | C | Mn | Si | S | Cu | Fe | Ni | Cr |
| Monel 400 | 0.30 max | 2.00 max | 0.50 max | 0.24max | 28.0-34.0 | 2.50 max | 63.00 min | – |
Monel 400 Mechanical Properties
Monel 400 offers a useful balance of tensile strength, yield strength, elongation, and density for piping and tubing systems that must perform reliably under pressure and corrosive service.
| 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 % |
400 Alloy Pipes & Tubes Physical Properties
| Properties | Metric | Imperial |
| Density | 8.8 gm/cm3 | 0.318 lb/in3 |
Monel UNS N04400 Tube Equivalent Grades
| STANDARD | WERKSTOFF NR. | UNS | JIS | AFNOR | BS | GOST | EN |
| Monel 400 | 2.4360 | N04400 | NW 4400 | NU-30M | NA 13 | МНЖМц 28-2,5-1,5 | NiCu30Fe |
Monel 400 Pipe Pressure Rating
| Tube O.D. (in.) |
Wall Thickness of Tube (inches) | |||||||
| .028 | .035 | .049 | .065 | .083 | .095 | .109 | .120 | |
| Working Pressure (psig) | ||||||||
| 1/8 | 7900 | 10100 | ||||||
| 1/4 | 3700 | 4800 | 7000 | 9500 | ||||
| 5/16 | 3700 | 5400 | 7300 | |||||
| 3/8 | 3100 | 4400 | 6100 | |||||
| 1/2 | 2300 | 3200 | 4400 | |||||
| 3/4 | 2200 | 3000 | 4000 | 4600 | ||||
| 1 | 2200 | 2900 | 3400 | 3900 | 4300 | |||
Monel 400 Applications
Monel 400 Pipes and Tubes are used in seawater piping, heat exchangers, chemical transfer lines, brine heaters, pump shafts, process equipment, offshore systems, and refinery services where corrosion resistance and strength are both important.
Advantages of Using Monel 400 Pipes & Tubes
Monel 400 Pipes and Tubes provide strong resistance to seawater, steam, salt solutions, hydrofluoric acid, and alkaline media. They are also easy to fabricate and weld, making them suitable for marine, chemical, oil and gas, and heat transfer applications.
Where to Buy Monel 400 Pipes & Tubes
For Monel 400 Pipes and Tubes in seamless, welded, and fabricated forms, Amardeep Steel Centre offers project-ready material with standard documentation, dimensional options, and fast supply support. Products can be supplied in custom sizes, cut lengths, polished finishes, annealed and pickled condition, or as per customer requirement.
Contact us for a custom quotation, size confirmation, or technical assistance for Monel 400 piping and tubing requirements.
Frequently Asked Questions
What is Monel 400 Pipe and Tube?
Monel 400 Pipe and Tube are nickel-copper alloy products used for corrosion-resistant piping, heat exchanger, marine, and chemical processing applications.
What standards are used for Monel 400 Tubes?
Monel 400 tubing is commonly supplied to ASTM B163, ASME SB163, ASTM B730, and ASME SB730 depending on product form and project requirements.
Where is Monel 400 commonly used?
Monel 400 is used in seawater systems, chemical plants, brine heaters, heat exchangers, offshore equipment, and refinery services.
Is Monel 400 resistant to seawater?
Yes. Monel 400 is known for strong resistance to seawater and salt solutions, making it suitable for many marine and offshore applications.
