monel 400

Unifit Metalloys Inc offer a wide range of ASTM B163 Monel 400 Pipes & Tubes, Round Bars, Sheets, Pipe Fittings, Flanges and Fasteners using high quality raw materials. We are Manufacturers, Supplier and Exporters of all types of Monel 400 Material. Our range of Monel Pipes provide excellent resistance against corrosive media, alkalies and high temperature. Our Monel 400 Pipes & Tubes are available in different outer diameter as per the requirements of the clients. These Monel 400 pipes & tubes are widely used in various application industries like petrochemicals plants, oil refineries, fertilizers plants and many others.

Monel 400
UNS N04400 / W.Nr. 2.4360 & 2.4361

 

 Alloy 400 is a single phase, solid-solution alloy that offers superior resistance to many corrosive environments over a temperature range from sub-zero to 800°F. Alloy 400 has been widely used in many applications but has been particularly useful in marine and chemical processing. Typical applications include valves; pumps 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 heat exchangers; and deaerating heaters.

Forms In Monel 400 Available With UNIFIT METALLOYS INC

  • Sheet
  • Plate
  • Bar
  • Pipe & Tube (welded & seamless)
  • Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
  • Wire
  • ASTM Specifications

Pipe Smls

Pipe Welded

Tube Smls

Tube Welded

Sheet/Plate

Bar

Forging

Fitting

Wire

B165

B725

B163

 ---

B127

B164

B564

B366

--- 

Resistance to Corrosion
The corrosion resistance of Alloy K500 is virtually the same as Alloy 400 with exception when in the agehardened condition, Alloy K500 is more susceptible to stress-corrosion cracking in certain environments. Resistance to hydrogen sulfide makes Alloy K500 useful in sour-gas environments making it extremely popular in the oil patch. Low corrosion rates in sea water make Alloy K500 suitable for marine service although pitting may occur in stagnant waters but the rate of pitting slows after initial attack.
Chemical Composition, %

C

Mn

S

Si

Ni

Cu

Fe

0.30 max

2.00 max

0.024 max

0.50 max

63.0 min

28.0-34.0

2.50 max

Characteristics of Monel 400?

  • Resistant to seawater and steam at high temperatures
  • Excellent resistance to rapidly flowing brackish water or seawater
  • Excellent resistance to stress corrosion cracking in most freshwaters
  • Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated
  • Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations, but is seldom the material of choice for these acids
  • Excellent resistance to neutral and alkaline salt
  • Resistance to chloride induced stress corrosion cracking
  • Good mechanical properties from sub-zero temperatures up to 1020° F
  • High resistance to alkalis

Mechanical Properties / Typical room temperature Tensile Properties of Annealed Material

Product Form

Condition

Tensile (ksi)

.2% Yield (ksi)

Elongation (%)

Hardness (HRB)

Rod & Bar

Annealed

75-90

25-50

60-35

60-80

Rod & Bar

Cold-Drawn Stress Relieved

84-120

55-100

40-22

85-20 HRC

Plate

Annealed

70-85

28-50

50-35

60-76

Sheet

Annealed

70-85

30-45

45-35

65-80

Tube & Pipe Seamless

Annealed

70-85

25-45

50-35

75 max *

Fabrication of Monel 400

Typical shaping, forming, machining and joining operations for Alloy 400 can be used in fabrication. Hot working operations should be performed between 1200°F and 2150°F. For heavy reductions a temperature between 1700°F and 2150°F should be used. Cold working should be performed on annealed material.

 Applications of Monel 400 used

  • Marine engineering
  • Chemical and hydrocarbon processing equipment
  • Gasoline and freshwater tanks
  • Crude petroleum stills
  • De-aerating heaters
  • Boiler feed water heaters and other heat exchangers
  • Valves, pumps, shafts, fittings, and fasteners
  • Industrial heat exchangers
  • Chlorinated solvents
  • Crude oil distillation towers

 

 

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