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What is the difference between austenitic stainless steel and martensitic stainless steel?

What is the difference between austenitic stainless steel and martensitic stainless steel?

Time:2022-03-16 Source:WUXI JIANO SPECIAL STEEL CO.

Martensitic stainless steel is a more common classification of stainless steel materials, the application of this type of stainless steel material is particularly convenient, especially in the welding of martensitic stainless steel is particularly favored by the user. Martensitic stainless steel in the case of heating, can be made to process the performance is particularly outstanding, this is recognized. Martensitic stainless steel is often compared with austenitic stainless steel, this is the two more common stainless steel. Next we will give the big guys to introduce the difference between martensitic stainless steel drink austenitic stainless steel.


A, austenitic stainless steel

Austenitic stainless steel for the face-centered cubic structure of the austenitic organization.

Industrial grades can be divided into Cr-Ni (300 series) and Cr-Ni-Mn-N (200 series) two categories.

In the normal heat treatment process, the steel matrix organization is austenite, inappropriate heat treatment process or different heat state, in the austenite matrix there may be a small amount of carbide and ferrite organization.

Austenitic stainless steel can not change its mechanical properties by means of heat treatment process, only the form of cold deformation for strengthening.

It can be obtained by adding molybdenum, copper, silicon and other alloying elements for various applications of different steel grades, such as 316L, 304Cu, etc.

Specific characteristics: non-magnetic, better low-temperature properties, easy to shape, weldability is better.

2, martensitic stainless steel

Martensitic stainless steel for the body-centered cubic structure of the ferrite organization, can not choose the heat treatment process to change its organizational structure.

Martensitic stainless steel has strong magnetic properties, easy to shape, rust and corrosion resistance, pitting resistance and other characteristics.

According to the carbon and nitrogen content of the steel can be divided into high purity martensitic stainless steel (such as 409L) and ordinary martensitic stainless steel (such as 430) two categories.

What is the difference between martensitic stainless steel and austenitic stainless steel, which we have long been in the above article to give a detailed explanation of the big guys. The chemical composition of martensitic stainless steel and austenitic stainless steel is still a relatively large difference, so the guys in the case of the purchase of stainless steel materials, is able to pay attention to the composition of stainless steel table, most from the composition of the table, the guys can see what kind of stainless steel. If you have the need to buy martensitic stainless steel, then act quickly.