Monel 400

1.Application
Monel 400 alloy is a multi-purpose material in many industrial applications:
1) Seamless water pipe in the power factory
2) Sea-water exchanger and evaporator
3) Sulfuric acid and hydrochloric acid environment
4) Crude distillation
5) Sea-water in the use of equipment and propeller shaft
6) Nuclear industry and used in the manufacture of uranium enrichment isotope separation equipment
7)Manufacturing hydrochloric acid equipment used in the production of pump and valve.

2. Monel 400 Chemical composition

Alloy

%

Ni

Cu

Fe

C

Mn

Si

S

Monel400

Min.

63

28

- 

- 

- 

- 

- 

Max.

- 

34

2.5

0.3

2

0.5

0.024


3. Monel 400 Physical properties 

Density

Melting point

8.83 g/cm³

1300-1390


4. Monel 400 Alloy minimum mechanical properties in the room temperature

Alloy state

Tensile strength

Yield strength

Elongation

Rm N/mm²

R P0. 2 N/mm²

A 5 %

Monel400

480

170

35



Monel 400 alloy in the fluoride gas, hydrochloric acid, sulfuric acid, hydrofluoric acid and their derivatives have a very good corrosion resistance property, and possess better corrosion resistance more than the copper alloy in the sea water.
Acid medium: Monel 400 have corrosion resistance in less than 85% consistency of sulfuric acid. Monel 400 is an
important material that resistant to hydrofluoric acid. Water corrosion: Monel 400 alloy in most corrosion cases of water,
not only excellent corrosion resistance, but also less pitting, stress corrosion, the corrosion rate less than 0.025mm / a. High temperature corrosion: Monel 400 for the work of the highest temperature at about 600 in general in the air, in the high
temperature steam, the corrosion rate less than 0.026mm / a. Ammonia: Monel 400 can be resistant to an hydrous
ammonia and aminate conditions corrosion below 585 due to the high nickel.


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