Basic information and corresponding grades

Monel 400 alloy steel bar is a nickel-based Ni-Cu single-phase solid solution corrosion-resistant alloy with excellent comprehensive performance. Its corresponding grades include UNS N04400, W.Nr.2.4360, NAS NW400, NCu30 and 30 nickel-copper alloy, etc., and implements ASTM B127, ASTM B164, ASTM B165 and other standards

Product Parameters

Chemical Composition

Mechanical Properties

Physical Performance

Physical properties

1. Density: 8.83g/cm³

2. Tensile strength at room temperature: high strength (specific values are not clearly marked with minimum values)

3. High temperature working temperature: continuous working temperature in air is about 600℃, and the corrosion rate in high temperature steam is less than 0.026mm/a

Corrosion resistance

Monel 400 alloy rods show excellent corrosion resistance in a variety of environments, including:

1. Acid medium: resistant to sulfuric acid with a concentration of ≤85%, and is one of the few materials that can withstand hydrofluoric acid

2. Water and seawater corrosion: corrosion rate <0.025mm/a, and pitting and stress corrosion rarely occur

3. Other environments: resistant to neutral solutions, atmosphere, organic compounds, anhydrous ammonia (below 585℃) and chloride solutions

Product characteristics and processing advantages

1. Metallographic structure: high-strength single-phase solid solution structure

2. Key features:

General corrosion-resistant alloy with large dosage and wide application

Good ductility and excellent welding performance (AWS is recommended A5.14 welding wire ERNiCu-7 or AWS A5.11 welding rod EniCrCu-7)

Good cutting performance, generally no stress corrosion cracking

High surface finish, can be processed into thin plates, bars and other forms

Typical application areas

Monel 400 alloy steel bars are widely used in the following scenarios:

1. Energy industry: seamless water pipes, steam pipes in power plants, crude oil distillation units

2. Marine engineering: seawater exchangers, evaporators, pump shafts, propellers and offshore wave shields

3. Chemical industry: sulfuric acid/hydrochloric acid environmental equipment, hydrocarbon chlorination production pumps and valves, MEA reboiler pipelines

4. Nuclear industry: uranium refining and isotope separation equipment

5. Others: salt plant heaters, industrial heat exchangers, gasoline clean water tanks, etc.

Common specifications

The forms include round bars, forged round bars, forgings, etc., which can be customized to size and cut