Monel Alloy 400 UNS N04400 Seamless Pipe

Product Details of Monel Alloy 400 Seamless Pipes：

Overview of Monel 400

Monel 400 belongs to the copper-nickel corrosion-resistant alloy, which is the corrosion-resistant alloy with the largest consumption, the most versatile and excellent comprehensive performance. This alloy has excellent corrosion resistance in hydrofluoric acid and fluorine gas medium, and also has excellent corrosion resistance to hot concentrated lye. At the same time, it is resistant to corrosion from neutral solutions, water, sea water, air, organic compounds, etc. An important feature of this alloy is that it generally does not produce stress corrosion cracks and has good cutting performance.

Monel 400 alloy has excellent corrosion resistance in fluorine gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives. At the same time, it is more corrosion resistant than copper-based alloys in seawater. Acid medium: It is corrosion resistant in sulfuric acid with a concentration of less than 85%.

Monel 400 is one of the few important materials that can withstand hydrofluoric acid.
Water corrosion: Under most water corrosion conditions, Monel 400 alloy not only has excellent corrosion resistance, but also pitting corrosion and stress corrosion are rarely found, and the corrosion rate is less than 0.025mm/a.
High-temperature corrosion: The maximum temperature of continuous work in the air is generally around 600°C, and the corrosion rate in high-temperature steam is less than 0.026mm/a.
Ammonia: Due to the high nickel content of the alloy, it can withstand corrosion under anhydrous ammonia and ammoniating conditions below 585°C.

Chemical Composition

Physical Properties

Mechanical Behavior

Manufacturing Process of Monel 400 Seamless Pipes & Tubes

(1) Hot-rolled seamless pipe: tube blank steel-inspection → shearing → heating → piercing-extension rolling-tension reduction-cooling bed cooling-straightening-cutting head-chamfering-non-destructive testing → inspection → anti-rust treatment , Packaging → weighing, warehousing.

(2) Cold drawn precision seamless steel pipe: round tube billet→pickling, inspection→cutting→heating→perforating→pipe rolling→cooling→inspection (grinding)→(micro-oxidation heat treatment)→pickling, lubrication→shrinking tube→ Cold drawing→bright heat treatment→precision straightening→cutting, chamfering→non-destructive testing→inspection→anti-rust treatment, packaging→weighting, warehousing.

(3) Cold-rolled precision seamless tube: round tube blank → inspection → shearing → heating → piercing → tube rolling → cooling → inspection → pickling, lubrication → cold rolling mill rolling → oxygen-free heat treatment → precision straightening → cutting head , Chamfering → non-destructive testing → inspection → anti-rust treatment, packaging → weighing, storage.

Application Fields

Monel 400 alloy is a multi-purpose material, which can be used in many industrial fields such as seamless water pipes, steam pipes, sea water exchangers and evaporators in power plants, pump shafts and propellers of sea water use equipment, and nuclear industry. It is used to manufacture equipment for uranium extraction and isotope separation, as well as pumps and valves used in the production of hydrochloric acid equipment. In the field of materials, alloys can be used to make seamless tubes, round tubes, welding strips, strips, and so on.

For more information about Monel Alloy 400 (UNS N04400/2.4360) Seamless Pipes & Tubes, please call +86 17708476248 or send an Email to [marketing@ronsteel.com]