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Danyang Kaixin Alloy Material Co., Ltd.
Monel 400
Product properties:

Product Name: Monel 400 Nickel Alloy

Equivalent Grades: UNS N04400 / Alloy 400 / Monel 400 / W.Nr. 2.4360

Material Type: Nickel-Copper Alloy

Product Forms: Welding Wire, TIG Rod, MIG Wire, Strip, Round Bar, Billet & Customized Products

Manufacturing Process: VIM + ESR (Vacuum Induction Melting & Electroslag Remelting)

Standards: ASTM B127, ASTM B164, ASTM B163, AWS A5.14, ISO 18274

Certification: ISO9001:2015, ISO45001:2018, ISO14001:2015

Manufacturer: Danyang City Kaixin Alloy Material Co., Ltd.

Email: kaixinalloy@kx-alloy.com

Phone: +86 13776484780

Product Description

Monel 400 (UNS N04400 / Alloy 400) is a nickel-copper alloy with excellent corrosion resistance, seawater resistance, high strength, and good toughness. Designed for harsh environments including marine atmospheres, saltwater, acids, alkalis, and chemical media, it delivers reliable performance across marine engineering, chemical processing, oil & gas, and industrial equipment applications.

Properties & Applications

 

Monel 400 Key Features

Monel 400 offers exceptional resistance to seawater, saltwater corrosion, hydrofluoric acid, alkalis, and chloride environments, combined with high strength, excellent toughness, good weldability, superior resistance to stress corrosion cracking, stable mechanical properties from sub-zero to elevated temperatures, non-magnetic characteristics in the annealed condition, and long-term reliability in demanding marine, chemical, and industrial environments.

 

Monel 400 Product Application

Monel 400 (UNS N04400 / Alloy 400) is a high-performance nickel-copper alloy widely used in industries requiring excellent corrosion resistance, seawater resistance, high strength, and superior toughness. Designed for harsh service environments, Nickel Alloy 400 performs reliably under exposure to saltwater, chemical media, acidic conditions, and industrial corrosive environments.

Typical Monel 400 applications include:

Marine & Offshore Engineering: Seawater piping, marine valves, pumps, propeller shafts, seawater cooling systems, offshore structures, and shipbuilding components.

Chemical Processing: Hydrofluoric acid equipment, chemical storage tanks, process piping, heat exchangers, reactors, and corrosion-resistant processing equipment.

Oil & Gas: Offshore platforms, oil well components, valves, pumps, instrumentation systems, and equipment exposed to corrosive fluids.

Power Generation: Boiler feedwater systems, heat exchangers, condensers, steam generator components, and power plant auxiliary equipment.

Desalination & Water Treatment: Seawater desalination systems, evaporator components, saltwater handling equipment, and water processing facilities.

Aerospace & Industrial Equipment: High-strength fasteners, shafts, springs, precision components, and industrial parts requiring corrosion resistance and mechanical durability.

Electrical & Instrumentation: Electrical connectors, sensor components, and equipment used in marine and chemical environments.

With its outstanding corrosion resistance, mechanical strength, and long-term durability, Monel 400 remains one of the most trusted nickel-copper alloys for marine, chemical, oil & gas, and industrial applications worldwide.

 

Kaixin Alloy offers custom alloy compositions, sizes, dimensions, and product specifications according to customer requirements.

Monel 400Composition content
Ni≥63%
Cu:28%~34%
Fe≤2.5%
Mn≤2%
Si≤0.5%
C≤0.3%
S≤0.024%
P≤0.005%
Vacuum induction furnace
Electroslag remelting
Product physical properties
Density

ρ=8.80 g/cm³

Melting temperature range

1300-1350 ℃

Specifications

Monel 400 Product Forms & Available Sizes

 

 

Product Form

Available Sizes

Welding Wire

Diameter: 0.8–5.0 mm

TIG Welding Rod

Diameter: 1.6–6.4 mm

MIG Welding Wire

Diameter: 0.8–1.6 mm

Nickel-Copper Alloy Strip

Thickness: 0.05–6 mm Width: 5–350 mm

Round Bar

Diameter: 6–300 mm

Billet

Diameter: Up to 600 mm

Forged Bar

Customized Sizes

Sheet & Plate

Customized Sizes

Seamless Tube & Pipe

Customized Sizes

Wire Rod

Customized Sizes

Customized Components

Made to Customer Requirements

 

Monel 400 Mechanical Properties (Typical)

 

 

Property

Value

Tensile Strength

≥480 MPa

Yield Strength (0.2%)

≥170 MPa

Elongation

≥35%

Hardness

≤90 HRB

Density

8.80 g/cm³

Melting Range

1300–1350°C

 

Monel 400 Physical Properties

 

Property

Value

Density

8.80 g/cm³

Modulus of Elasticity

179 GPa

Thermal Conductivity

21.8 W/m·K

Electrical Resistivity

0.55 μΩ·m

Specific Heat

427 J/kg·K

Coefficient of Thermal Expansion

13.9 μm/m·°C

Magnetic Property

Slightly magnetic at room temperature

 

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Quality Control & Certification
Monel 400 Product Quality Inspection & Third-Party Certification

Kaixin Alloy manufactures Monel 400 (UNS N04400 / Alloy 400 / W.Nr. 2.4360) in compliance with ASTM B127, ASTM B163, ASTM B164, ASTM B165, AWS A5.14, ISO 18274, and EN 10204.

Every production batch is tested for:

Chemical Composition Analysis

PMI Verification

Tensile & Yield Strength Testing

Hardness Testing

Non-Destructive Testing (NDT)

Final Product Inspection

We provide EN 10204 3.1 Certificates, Mill Test Certificates (MTCs), and full material traceability to ensure reliable performance for marine engineering, chemical processing, oil & gas, desalination systems, power generation, and industrial corrosion-resistant applications.

Monel 400 Production process