Monel 400 - Introduction, Applications et fiche technique (2024)

FAQs

What are the applications of Monel 400? ›

Typical applications are valves and pumps; pump and propeller shafts; marine fixtures and fasteners; electrical and electronic components; springs; chemical processing equipment; gasoline and fresh water tanks; crude petroleum stills, process vessels and piping; boiler feedwater heaters and other heat exchangers; and ...

ASTM B127 is the standard specification for the nickel-copper alloy Monel 400 (UNS N04400) plate, sheet and strip. The Monel 400 material supplied by Metals-Piping can be either hot rolled or cold rolled which are further classified by thickness.

Yes, Monel and stainless steel can both corrode, but Monel generally exhibits higher corrosion resistance due to its higher nickel content. Monel's increased nickel concentration enhances its ability to withstand corrosion, especially in challenging environments like exposure to saltwater.

Stress relieving will reduce stresses without recrystallizing the grain structure. Heating to 1000/1050°F for 1 to 2 hours will relieve strains in either hot or cold worked products.

Used in a variety of applications, Monel® 400 has excellent resistance to seawater, and can also be used in hydrochloric and hydrofluoric acids. Monel® 400 is also known as Phyweld 400 and Nicorros LC.

Monel wire is often stronger than stainless steel wire, particularly in terms of its resistance to corrosion and high-temperature environments.

Monel K-500 Bars have approximately three times the yield strength and double the tensile strength when compared with alloy 400. Plus, it can be further strengthened by cold working prior to precipitation hardening.

There are miscellaneous piping materials made from Monel 400 (UNS N04400, 67Ni-30Cu). These materials can be used in boiler or pressure vessel applications according to relative ASME Boil & Pressure Vessel Code(BPVC). ASTM B165 UNS N04400(Monel 400) seamless pipe, 323.9mm x 7mm.

While both alloys have excellent corrosion resistance properties, the copper content in monel gives them outstanding resistance to seawater or salt sprays. Though Inconel alloys also have the ability to resist seawater, it is too expensive for use in marine engineering applications.

The primary disadvantage of Monel is its cost compared with many other metals. This is due to it being a range of nickel-based alloys, based on up to 67% nickel content.

Why is Monel so expensive? ›

Monel metal, being a specialty alloy, is typically more expensive than common metals like steel or aluminum due to its complex manufacturing process and specialized applications. The production of Monel metal involves precise alloying of nickel and copper, which requires specialized equipment and expertise.

Monel 400 is a Nickel-Copper alloy that can be generally characterized as having good corrosion resistance, good weldability, and moderate to high strength. It is resistant to sea water and steam at high temperatures as well as caustic solutions and salt.

It has an impressive melting point of 1300-1350°C (2372-2462°F), and a Curie temperature of 35°C (95°F). While Monel does rack up some impressive numbers, there are alloys that do even better in high temperatures.

Compared to steel, Monel is very difficult to machine as it work-hardens very quickly. It needs to be turned and worked at slow speeds and low feed rates.

Description. Alloy 400 is a single phase, solid-solution nickel-copper alloy that offers superior resistance to many corrosive environments over temperatures ranging from sub-zero to 800°F. This alloy is only hardenable through cold working, rather than heat treatment.

Monel is used for marine engineering, chemical and hydrocarbon processing equipment, valves, pumps, shafts, fittings, fasteners, and heat exchangers. It is also used as part of metal instruments and frames of eyeglasses.

Monel 400 is a Nickel-Copper alloy that can be generally characterized as having good corrosion resistance, good weldability, and moderate to high strength. It is resistant to sea water and steam at high temperatures as well as caustic solutions and salt.

Monel K-500 Bars have approximately three times the yield strength and double the tensile strength when compared with alloy 400. Plus, it can be further strengthened by cold working prior to precipitation hardening.

Inconel and Monel temperature range

Similar to monel, Inconel alloys deliver a good performance at low temperatures. However, due to a higher content of nickel in their alloys, most Inconels function well at elevated temperatures that range between 1200° F to about 2200° F, which is almost twice that of monel alloys.