Heat Treatment Methods For Different Types Of Stainless Steel Pipe Fittings

The so-called heat treatment is to carry out corresponding annealing, quenching, tempering, normalizing and other related processing on Stainless Steel Weld Fittings with different structures and types. Let's take a look at the heat treatment methods of different types of stainless steel pipe fittings with Zhitong Stainless Steel Pipe Fittings Factory!

1. Austenitic stainless steel pipe fittings

Austenitic stainless steel pipe fittings are stainless steel pipe fittings with a wide range of uses and large usage. The outstanding feature is the austenitic structure that does not undergo phase transformation at room temperature. It cannot be hardened by heat treatment, but can be hardened by cold working. The commonly used heat treatment method is solution treatment.

2. Ferritic stainless steel pipe fittings

Ferritic stainless steel pipe fittings generally do not have ν-α phase transformation, and are ferrite structures that do not undergo phase transformation at high temperature and room temperature. However, when the steel contains a certain amount of austenite-producing elements such as carbon and nitrogen, austenite structures will also be formed at high temperatures. This type of steel cannot be strengthened by heat treatment, and can only be annealed to remove internal pressure and promote further surface treatment.

3. Martensitic stainless steel pipe fittings

Martensitic stainless steel pipe fittings have a distinct phase transition point, which is the austenite structure at high temperature, and undergoes a martensitic phase transition when cooled, and then transforms into a martensitic structure and hardens. Because this type of stainless steel pipe fittings contains high chromium and has good hardenability, it can be treated with a variety of heat treatment methods, such as quenching and tempering.