What are the requirements for material selection of stainless steel valve castings

Stainless steel valve castings play a vital role in the field of fluid control. Their main function is to effectively regulate and control the flow of fluid media. Therefore, the choice of materials has a profound impact on the performance, life and safety of valves.

Corrosion resistance requirements
The corrosion resistance of stainless steel valve castings is a key consideration in their design and application, especially in industries such as chemicals, oil and gas, where fluid media often contain a variety of corrosive components, such as acids, alkalis and salts. In this context, choosing the right stainless steel material is particularly important.
Ningbo Etdz Andrew In the material selection process, the content of chromium and nickel is given priority. The higher the chromium content, the stronger the corrosion resistance of stainless steel. The addition of nickel further improves the stability of the material in high temperature and highly corrosive environments. For example, 316L stainless steel, due to its high chromium and nickel content, exhibits excellent corrosion resistance and is widely used in the chemical and food processing industries, becoming the preferred material for many engineering projects.

Mechanical performance requirements
In practical applications, stainless steel valve castings need to withstand pressure and temperature under various working conditions, so their mechanical properties, including strength, hardness and toughness, are crucial. These properties directly determine the service life and safety of valve castings.
Ningbo Etdz Andrew selects stainless steel materials with excellent mechanical properties according to the specific needs and working environment of customers. In high pressure and high temperature environments, 316Ti or duplex stainless steel is recommended. These materials not only have high strength but also have good creep resistance. In low temperature environments, materials with low temperature toughness must be selected to ensure the normal operation of valve castings under extreme conditions.

Processing performance requirements
The manufacturing process of stainless steel valve castings involves multiple links such as casting, machining and heat treatment. Therefore, the processing performance of the material cannot be ignored. Processing performance includes casting performance, cutting performance and welding performance, which directly affect the quality and cost of the product during the production process.
In terms of material selection, Ningbo Etdz Andrew pays special attention to casting performance and cutting performance. Excellent casting performance can effectively avoid defects such as pores and slag inclusions during the casting process, thereby improving the overall quality of the casting. At the same time, good cutting performance can reduce the difficulty of machining and reduce production costs. In addition, for valve castings that need to be welded, it is also crucial to ensure that the material has good welding properties, which will directly affect the quality and strength of the welded joints, thereby ensuring the overall safety of the valve.