Classification of steel used for stainless steel elbows

The stainless steel elbow (stainless steel elbow), we can see from its name that the stainless steel elbow material must be stainless steel, stainless steel elbow is different from the carbon steel elbow is mainly different material, the chemical composition of the Keep the surface of the elbow for a long time will not rust and will not be corroded. There are many types of stainless steel, here we talk about the classification of steel used in stainless steel elbows, the details are as follows:

A, austenitic stainless steel: The matrix is ​​mainly composed of an austenite structure (γ phase) with a face-centered cubic structure, which is non-magnetic and is mainly strengthened by cold working (and may result in a certain magnetic property).

B. Austenitic-ferritic (dual-phase) stainless steel: The matrix has both austenite and ferrite two-phase structure (where the content of the lesser phase is generally greater than 15%), magnetic, and can be made by cold working Reinforced stainless steel

C. Ferritic stainless steel: The matrix is ​​mainly composed of a ferrite structure (alpha phase) with a body-centered cubic crystal structure. It is magnetic, and it cannot be hardened by heat treatment, but it can be slightly strengthened by cold working.

D, martensitic stainless steel: the matrix is ​​martensite, magnetic, stainless steel can adjust its mechanical properties through heat treatment;

E. Precipitation Hardening Stainless Steel: A stainless steel whose base is austenite or martensitic and can be hardened (strengthened) by precipitation hardening (also known as age hardening).

Although the stainless steel elbow is made of stainless steel, care must be taken not to put it in contact with corrosive substances during the maintenance of the stainless steel elbow and to avoid damage to the protective layer of steel.