Properties & Applications of Monel 400


What is Monel 400 made of?

Monel 400 Round bar is a binary alloy. It is also known as "puritan alloy". This context implies that the proportions of nickel and copper are equal to that of the extracted natural ore from the Sudbury mines in Ontario, Canada. The International Nickel Company created the alloy in 1901. Monel 400 Round bar was primarily named after their company president Ambrose Monell. Still, as trademarks are not permitted to carry a family name, they created their loophole by eliminating the "L" at the end. Now, the Monel 400 Round bar trademark is owned by the Special Metals Corporation. It is predominantly composed of 52-67% nickel (Ni) and copper (Cu), along with small amounts of iron, manganese, carbon, and silicon. As compared to steels, it isn't easy to machine it as when worked. It hardens instantly

Monel 400 Round Bar


Standard Composition of Monel 400

The standard composition of the Monel 400 Round bar is mostly nickel and copper.

Moreover, the standard composition of the Monel 400 Round bar consists of:

  • Nickel (plus Cobalt) is 63 % minimum.

  • Carbon is 0.3 % maximum

  • Manganese is 2.0% maximum.

  • Iron is 2.5% maximum.

  • Sulfur is 0.024 % maximum.

  • Silicon is 0.5 % maximum

  • Copper is 29-34 %

 

 

Forms of Monel 400 Available

This alloy is available in various patterns and forms and product lines such as rod and bar (sometimes termed as 400 bar). Still, Ulbrich predominantly supplies this alloy in strip and wire form. Owing to its high strength properties, this Monel alloy can be utilized at lighter gauges and thicknesses for peculiar applications as related to other nickel alloys or stainless steels. This alloy can be significantly be produced in a wide array of a variety of strip finishes and tempers. Monel 400 Round bar is additionally available in multiple shapes and sizes of wire consisting of flat and round Monel wire.

 

Properties of Monel 400

The description of the Monel 400 Round bar's properties is that this alloy is robust and corrosion-resistant compared to other similar metals. The following table offers a detailed description of the properties of the Monel 400 Round bar.

 

Property

Value (Metric)

Value (Imperial)

Density

8.80*103 kg/m3

549 lb/ft3

Modulus of Elasticity

179 GPA

26,000 ksi

Thermal Expansion (20ºC)

13.9*10-6º C-1

7.7*10-6 in/(in*ºF)

Specific Heat Capacity

427 J/(kg*K)

0.102 BTU/(lb*ºF)

Thermal Conductivity

21.8 W/(m*K)

151 BTU*in/(hr*ft2*ºF)

Electric Resistivity

54.7*10-8 Ohm*m

54.7*10-6 Ohm*cm

Tensile Strength (Annealed)

550 MPa

79,800 psi

Yield Strength (Annealed)

240 MPa

34,800 psi

Elongation

48%

48%

Liquidus Temperature

1,350º C

2,460º F

Solidus Temperature

1,300º C

2,370º F

 

 

Applications of Monel 400

 

Monel 400 Round bar well known for its high strength and corrosion-resistant properties. It functions in a wide array of temperatures and is available for use in a variety of products. Various Grades of Monel are utilized in a wide variety of industries, from aerospace to marine applications. It is extensively used for piping as it is equally resistant to both steam and seawater atmosphere. More precisely, its toughness and anti-corrosion properties make it perfectly ideal for heavy-duty applications like piping in the oil industry.

 

Other feasible applications include heat exchangers, sea water scrubbers in gas systems, cladding, pumps and shafts in the chemical business, and more. It is owing to the excellent mechanical properties from sub Zero temperatures to approximately 1000°F. This alloy can function in a variety of temperatures. The Monel 400 Round bar is a peculiarly more expensive alloy compared to stainless steel.

 

What are the allied best applications for Monel 400 Round bar?

 

  • Marine Engineering

  • Chemical Equipment

  • Hydrocarbon Processing

  • Valves

  • Pumps

  • Fittings

  • Fasteners

  • Heat Exchangers

  • Flexible Metal Hose

  • Gasoline and freshwater tanks

  • Crude petroleum stills

  • De-aerating heaters

  • Boiler feedwater heaters and other heat exchangers

  • Shafts

  • Industrial heat exchangers

  • Chlorinated solvents

  • Crude oil distillation towers



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