Monel400 Introduction
Monel400 is a maximum amount, the most widely used, very good overall performance of corrosion-resistant alloys. This alloy in hydrofluoric acid and fluoride gas medium with excellent corrosion resistance of hot concentrated alkaline solution has excellent corrosion resistance. Also resistant to neutral solution, water, sea, air, organic compounds such as corrosion. An important feature of the alloy is generally not produce stress corrosion cracking, cutting good.

 National standards and known as: MONEL400, ASTM B127, ASME SB-127, AMS 4554, JIS NW4400 UNS N04400, EN 2.4360, NCu28-2.5-1.5 Monel400
The main component
65Ni-32Cu-1Fe-0.1C

Metallurgical structure: Monel400 alloy high-strength single-phase solid solution.
Mechanical properties:
Tensile strength: σb ≥ 450Mpa,

    Yield Strength: σb ≥ 170Mpa,

    Elongation: δ ≥ 30%

Resistance to corrosion: the corrosion resistance of Monel general superior than the nickel-copper, pure nickel is more than reductive medium corrosion resistance, oxidation resistance than the copper corrosion medium of sulfuric acid, phosphoric acid, corrosion-resistant carbon is very good. Particularly resistant to hydrochloric acid corrosion of hot concentrated alkali has excellent corrosion resistance. Monel400 alloy in fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives have a very good corrosion resistance. While in sea water corrosion resistance than the copper alloy is more

Monel400 is deformable processing of nickel - copper-nickel base alloys, with good resistance to seawater corrosion and chemical resistance, resistance to chloride stress corrosion cracking strength. The alloy is one of the few able to use one of the fluoride in the alloy. In hydrofluoric acid and fluoride gas medium with excellent corrosion resistance to oxide stress fission, such as water, salt water environment.

    Concentration in the medium alkaline and salt solution, Monel 400 also has very good corrosion resistance.

Alkaline environment in the cooler, this alloy is used in weak acid, such as sulfur, hydrogen fluoride environment.

Acid medium: Monel400 in concentrations less than 85% of sulfuric acid are corrosion resistant. Monel400 resistant to hydrofluoric acid is an important material in one of the very few.

 Water corrosion: Monel400 alloy corrosion in most cases the water is not only excellent corrosion resistance and pitting corrosion, stress corrosion, and rarely found, the corrosion rate of less than 0.025mm / a.

High temperature corrosion: Monel400 continuous in the air at the maximum temperature is generally about 600 ℃, high temperature steam, the corrosion rate of less than 0.026mm / a. Ammonia: As Monel400 high nickel content alloy, it can be resistant to 585 ℃ the following conditions of anhydrous ammonia and ammoniated corrosion.

 Supporting Welding: Monel Monel400 electrode (ENiCu-7), Monel400 wire (ERNiCu-7)