Supply Monel 400, monel 400, UNS N04400 nickel alloy plate, nickel pipe, nickel seamless tube, nickel round bar

Short Description:

Monel 400 is a nickel-copper alloy (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.

This nickel alloy is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. As would be expected from its high copper content, monel 400 is rapidly attacked by nitric acid and ammonia systems.

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Monel 400 main characteristics

▪ 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

Monel 400 applications

▪ 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 corrosion resistant

Monel 400 is virtually immune to chloride ion stress corrosion cracking in typical environments. Generally, its corrosion resistance is very good in reducing environments, but poor in oxidizing conditions. It is not useful in oxidizing acids, such as nitric acid and nitrous. Nevertheless, it is resistant to most alkalis, salts, waters, food products, organic substances and atmospheric conditions at normal and elevated temperatures.
This nickel alloy is attacked in sulfur-bearing gases above approximately 700° F and molten sulfur attacks the alloy at temperatures over approximately 500° F.
Monel 400 offers about the same corrosion resistance as nickel but with higher maximum working pressures and temperatures and at a lower cost due to its superior ability to be machined.

Monel 400 nickel alloy plate composition

C	Mn	S	Si	Ni	Cu	Fe
0.3 max	2.0 max	0.24 max	0.5 max	63 min	28-34	2.5 max

Monel 400 ASTM Specifications

Seamless pipe	ASTM B165	Welded Pipe	ASTM B725
Seamless tube	ASTM B163	Plate/Sheet	ASTM B127
Forging	ASTM B564	Bar	ASTM B164

Mechanical Properties

Form	Condition	Tensile (Ksi)	0.2% Yield (Ksi)	Elongation %	Hardness (HRB)
Bar	Annealed	75-90	25-50	60-35	60-80
Bar	Cold drawn	84-120	55-100	40-22	20-85
Plate	Annealed	70-85	28-50	50-35	60-76
Sheet	Annealed	70-85	30-45	45-35	65-80
Pipe	Annealed	70-85	25-45	50-35	75 max

available sizes and specifications

Monel 400 available sizes and specifications
Grade	Monel 400
Nickel plate	Thickness: 0.3mm - 150.0mm Width: 1000mm - 3000mm
Nickel strip/ nickel foil	Thickness: 0.02mm - 16.0mm Width: 5mm - 3000mm
Nickel coil	Thickness: 0.3mm - 16.0mm Width: 1000mm - 3000mm
Nickel pipe	Outside diameter: 6mm - 1219mm Thickness: 0.5mm - 100mm
Nickel Capillary Pipe	Outside diameter: 0.5mm - 6.0mm Thickness: 0.05mm - 2.0mm
Nickel bar	Diameter: Ф4mm - Ф600mm
Nickel wire rod	Diameter：Ф0.01mm - Ф6mm