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The definition of stainless steel castings and specific types of applications
- Dec 19, 2017 -

Stainless steel castings are products that are cast from a variety of stainless steels. Stainless steel castings have good corrosion resistance, mainly used in a variety of corrosive environments or occasions.

Stainless steel casting materials, if classified according to chemical composition can be divided into Cr stainless steel and Cr, Ni stainless steel these two categories; if classified by microstructure, then ferritic stainless steel, martensitic stainless steel, austenitic stainless steel And duplex stainless steel these four.


(1) Ferritic stainless steel

This stainless steel is based on chromium as the main alloying element in a range of 13% -30% and has good oxidation and corrosion resistance. In addition it can also be used as heat-resistant steel, but the welding performance, not very good.

(2) martensitic stainless steel

There are two types of martensitic stainless steel and precipitation hardening stainless steel, and in engineering applications, it is valued its mechanical properties and welding performance. Therefore, its stainless steel castings, mainly used in some important projects, and use of its outstanding features, to obtain the desired effect of use.

(3) austenitic stainless steel

Stainless steel castings made of austenitic stainless steel have the main advantage of having very good corrosion resistance. And its composition can be further reclassified. Moreover, to get a single austenite, you must add more than 0.35% of nitrogen.

(4) austenitic-ferritic duplex stainless steel

Its composition, is 5% -40% of ferrite, so that it can be a good improvement of alloy welding performance, improve its strength and corrosion resistance. As a result, stainless steel castings can be used normally in corrosive environments or environments. Therefore, it is commonly used in the oil industry.