ASTM B163 / ASTM B165 UNS N04400 Tube – Monel 400 Nickel Alloy Tube (WNR 2.4360)
We are a professional manufacturer and exporter of ASTM B163 UNS N04400 tube and ASTM B165 N04400 tube in China, supplying high-quality Monel 400 nickel alloy tubes for global industrial applications.
UNS N04400, also known as Alloy 400 or Monel 400, is a nickel-copper alloy offering outstanding corrosion resistance, high strength, and excellent mechanical properties across a wide temperature range. Equivalent to WNR 2.4360, this alloy performs exceptionally well in marine and chemical environments.
Manufactured in compliance with ASTM B163 (heat exchanger & condenser tubes) and ASTM B165 (seamless pipe & tube) standards, our Monel 400 tubes ensure precise dimensions, pressure integrity, and long-term reliability.
Product Specifications
Material Grade: UNS N04400 / Monel 400 / Alloy 400
WNR No.: 2.4360
Standards: ASTM B163 / ASTM B165
Type: Seamless Tube / Seamless Pipe
Available Size Range
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OD: 6.53 mm – 219.1 mm
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Wall Thickness: 0.89 mm – 12.7 mm
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Max Length: 20 meters
Custom sizes available upon request.
Chemical Composition of Monel 400 (UNS N04400)
| Element | % |
|---|---|
| Nickel (Ni + Co) | ≥ 63.0 |
| Copper (Cu) | 28.0 – 34.0 |
| Iron (Fe) | ≤ 2.50 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 0.50 |
| Carbon (C) | ≤ 0.30 |
| Sulfur (S) | ≤ 0.024 |
Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 483 MPa |
| Yield Strength | ≥ 193 MPa |
| Elongation | ≥ 35% |
Key Features of Monel 400 Nickel Alloy Tube
✔ Excellent resistance to seawater corrosion
✔ Outstanding resistance to hydrofluoric acid and alkalis
✔ High strength from sub-zero to elevated temperatures
✔ Good weldability and machinability
✔ Resistant to stress corrosion cracking
Corrosion Resistance
Monel 400 exhibits exceptional resistance to corrosion in:
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Seawater and marine environments
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Hydrofluoric acid
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Sulfuric acid
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Alkaline solutions
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Neutral and organic compounds
Its low corrosion rate in flowing seawater makes ASTM B165 N04400 tube especially suitable for offshore and marine engineering applications.
Applications of ASTM B163 / B165 UNS N04400 Tube
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Marine engineering systems
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Heat exchangers and condensers
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Chemical processing equipment
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Oil & gas offshore platforms
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Pump shafts and propeller shafts
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Valves, fittings and fasteners
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Boiler feedwater heaters
Manufacturing Standards
ASTM B163 – Seamless Nickel Alloy Condenser & Heat-Exchanger Tubes
Covers seamless tubes for condenser and heat exchanger service with strict requirements for mechanical properties, grain size, and testing methods.
ASTM B165 – Nickel-Copper Alloy Seamless Pipe & Tube
Covers cold-worked seamless pipe and tube of UNS N04400, including hydrostatic testing and nondestructive examination.
Available Specifications
ASTM B161 / B163 / B165 / B167 / B407 / B423 / B444 / B751 / B775 / B829
ASME SB161 / SB163 / SB165 / SB167 / SB407 / SB423 / SB444 / SB751 / SB775 / SB829
| New national standard | National standard unified digital code | American Standard grade | UNS code | European standard code | Foreign company commercial grade |
|---|---|---|---|---|---|
| Ni68Cu28Fe | – | Monel400 | N04400 | 2.436 | Monel 400(SMC) |
How to order our ASTM B163 N04400 seamless tubes?
Example#1, ASTM B163 N04400 seamless tubes / ASME SB163 UNS N04400 Monel 400 Seamless Tube, 25.4mm*2.77mm*2300mm length
