Monel 400 alloy steel

Monel 400 is a nickel-copper alloy steel (about 67% Ni – 23% Cu) that is resistant to sea water and steam at high temperatures as well as to salt and caustic solutions. Monel 400 is a solid solution alloy that can only be hardened by cold working. This nickel alloy exhibits characteristics like good corrosion resistance, good weldability and high strength. A low corrosion rate in rapidly flowing brackish or seawater combined with excellent resistance to stress-corrosion cracking in most freshwaters, and its resistance to a variety of corrosive conditions led to its wide use in marine applications and other non-oxidizing chloride solutions.
Monel 400 Nickel alloy similar material are : UNS N04400, NiCu30Fe
Monel 400 Nickel alloy usually used in the following industries :
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

Monel 400 alloy steel

Chemical composition of Monel 400 alloy steel

Ni Cr C Mn Si Mo Cu Co Al Ti
38-46 19.5-23.5 ≤0.025 ≤1.0 ≤0.5 2.5-3.5 1.5-3.0 ≤1.0 ≤0.2 0.6-1.2

Mechanical Properties of Monel 400 Nickel base alloy

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 StressRelieved 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 *

Monel 400 Nickel base alloy Product form and Specifications:

Product ASTM
Pipe Seamless B165
Pipe Welded B725
Tube Seamless B163
Sheet/Plate B127
Ring/Bar/Rod B164
Forging B564
Fitting B366

 

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