ASTM B165 UNS N04400 Nickel-Copper Alloy Cold-Worked Seamless Pipe
ASTM B165 UNS N04400 Nickel-Copper Alloy Cold-Worked Seamless Pipe
ASTM B165 UNS N04400 cold-worked seamless pipe is a high-strength nickel-copper alloy (Monel 400) known for its excellent corrosion resistance, particularly in seawater and various acidic solutions. "Cold-worked" refers to strengthening through mechanical working rather than heat treatment, which increases yield and tensile strength. It is widely used in the offshore, chemical processing, and oil and gas industries, and can be welded using a variety of welding techniques.
What is N04400 material?
UNS N04400 is the designation for Monel alloy 400. This nickel-copper alloy is renowned for its exceptional corrosion resistance in a wide range of corrosive conditions, including seawater, sulfuric acid, and alkaline solutions. This solid solution alloy, primarily composed of nickel and copper, offers high strength, good weldability, and maintains its properties over a wide temperature range, making it suitable for use in the marine, chemical processing, and oil and gas industries.
Chemical Composition of UNS N04400 Nickel-Copper Alloy Cold-Worked Seamless Pipe
| Ni | C | Mn | S | Si | Cu | Fe | |
| Max | 0.3 | 2.00 | 0.024 | 0.5 | 34.0 | 2.50 | |
| Min | 63.0 | 28.0 |
Mechanical Properties of UNS N04400 Tube
|
Condition & Size |
Tensile Strength, min. ksi [MPa] |
Yield Strength, min. ksi [MPa] |
Elongation, min. % |
|---|---|---|---|
| *A | 70 [480] | 28 [195] | 35 |
| *B | 70 [480] | 25 [170] | 35 |
| *C | 85 [585] | 55 [380] | 15 |
Monel UNS N04400 Cold-Worked Seamless Pipe Specification
| Our Presence | USA, Canada, Australia, UK, Malaysia, Poland, Iran, Italy, Singapore, UAE |
|---|---|
| Alloy 400 Seamless Pipe size | 4 to 219mm W. T.: 0.5 to 20mm |
| Alloy 400 EFW Pipe size | 5.0 mm – 1219.2 mm |
| Monel 400 Pipe Schedule | SCH5, SCH10, SCH40, STD, SCH80, SCH160 |
| Marking | All Monel Alloy 400 Pipes are marked as follows: Standard, Grade, OD, Thickness, Length, Heat No. (Or according to the customer's request.) |
| Manufacturers of Monel 400 Pipe |
Alloy 400 Pipe make Sumitomo Metals, Japan Alloy 400 Pipe make Nippon Steel Corporation, Japan Alloy 400 Pipe make Tubacex Tubos Inoxidables S.A., Spain Alloy 400 Pipe make Schoeller Bleckmann, Austria Alloy 400 Seamless Pipe make Seah Steel Corporation, Korea Alloy 400 Pipe make Sanyo Special Steel, Japan Alloy 400 Pipe make Kobe Special Tube, Japan |
| Monel 400 Pipe Length | Single Random, Double Random & Cut Length. |
| Alloy 400 Pipe Specification | ASTM B 165 ASME SB 165 / ASTM B 725 ASME SB 725 |
| Origin | European, Japanese, Korean, US, Russian, Indian (Strictly No Chinese Material) |
| Material Test Certificates (MTC) | Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2 |
| Monel 400 Pipe Form | Hollow, Square, Round, Rectangular , Straight Pipes, Hydraulic Etc. |
| Monel Alloy 400 Pipe Finish | Polished, AP (Annealed & Pickled), BA (Bright & Annealed), MF |
| Monel 400 Welded Pipe size | 5.0 mm – 1219.2 mm |
| Alloy 400 Pipe End | Plain End, Beveled End, Treaded. |
| Test |
Hardness Test Positive Material Identification – PMI Testing Flattening Test Pitting Resistance Test Intergranular Corrosion (IGC) Test Chemical Analysis – Spectro Analysis Micro and MacroTest Flaring Test Mechanical Testing Such as Tensile of Area |
Cold-Worked Seamless Pipe
Seamless: Manufactured without any welded joints, it offers superior structural integrity and leak-proof properties.
Cold Working: The cold working process involves deforming the pipe at room temperature to achieve a fine-grained structure, thereby increasing its strength.
As-Finished: Available in the cold-worked condition (higher strength than the annealed condition) or the cold-worked and annealed condition.
Fabrication and Welding
Welding: Before welding, thoroughly remove any foreign matter from the surface, such as cutting fluids and grease.
Stress Relief: Solution annealing may be required after welding to relieve internal stresses.
Work Hardening: Monel 400 hardens rapidly, making machining more difficult after the initial pass.
Caution: This material is susceptible to rapid attack by nitric acid and ammonia systems.
Standards and Testing
Standards: ASTM B165 covers material and fabrication requirements.
Testing: This includes tensile, hydrostatic, and nondestructive electrical testing.
Certification: Manufacturer certification of compliance with this specification may be required.
Gnee Steel is a supplier of UNS N04400 Nickel-Copper Alloy. Our product offerings include seamless pipes (sizes: 4-219 mm, thickness: 0.5-20 mm); welded pipes (sizes: 5.0-1219.2 mm, thickness: 0.5-20 mm); plates (sizes: 0.1-100 mm, width: 10-2500 mm); strip; round bars (sizes: 3-800 mm, diameter: 3-800 mm); flat bars (sizes: 2-100 mm, thickness: 10-500 mm); hexagonal bars (sizes: 2-100 mm); wire rod; and extruded sections. We partner with steel mills to provide our customers with Alloy 400 that meets or exceeds numerous leading industry standards, including ASTM, ASME, SAE, AMS, ISO, DIN, EN, and BS.
Gnee Steel stocks and sells UNS N04400 Nickel-Copper Alloy, pipe, tube, plate, strip, sheet, round bar, flat bar, forging billet, hexagon, wire and extruded shapes. Please feel free to contact us for a quote at ss@gneesteel.com
