A stainless steel specially used for urea production

A stainless steel specially used for urea production

Urea production requires high pressure of 14~25 MPa and high temperature of 180~210 ℃. Under the environment of carbon dioxide and ammonia, ammonia and water will be generated. Methylamine solution will cause serious corrosion to stainless steel.


725LN is a urea grade stainless steel, also called 310MoLN. The content of Cr and Ni is very high, and the content of C, S and P is very low. After solid solution and external treatment, the fully austenitic structure can be obtained. It is a kind of austenitic stainless steel specially developed for urea production. It has strong corrosion resistance to carbamate solution under high temperature environment. It is commonly used for stripping pipe and distribution pipe of carbon dioxide stripper and other urea production equipment.

stainless steel specially used for urea production

 

The following datasheet will provide more details about Urea production.

Chemical composition:

C

N

Cr

Ni

Mo

0.01

0.12

25

22

2.1

 

Physical Property:

Density:

Elastic modulus:

Thermal conductivity:

Hardness：

Elongation:

7.9 g/cm³

158-195 GPa

13 W/(m•℃)

HRB ≤95

≥40%
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