Stainless steel castings is a general term for steel castings produced from various stainless steel materials, which are mainly used under various media corrosion conditions.
As early as 1910, it was discovered that when the Cr content in steel exceeds 12%, it has good corrosion and oxidation resistance. In addition to containing more than 12% Cr, typical stainless steel also contains one or more other alloying elements, such as Ni, Mo, Cu, Nb, Ti, and N2.
Stainless Steel Casting Manufacturers, Let’s take a look at what are the classifications of this type of product?
According to chemical composition, there are two types of stainless steel: Cr stainless steel and Cr and Ni stainless steel. The main factors affecting the corrosion performance of stainless steel are the C content and precipitated carbides. Therefore, the lower the C content of corrosion-resistant stainless steels, the better, usually C≤0.08%. However, the high-temperature mechanical properties of heat-resistant steels are determined by the stability of the structure. The carbide precipitation phase, so the C content of heat-resistant steel is relatively high, generally the carbon content is more than 0.20%.
According to the classification of metallographic structure, stainless steel is divided into ferritic stainless steel, martensitic stainless steel, austenitic stainless steel and duplex (ferritic in the austenitic matrix) stainless steel.
Among them, austenitic-ferritic duplex stainless steel
The metallographic structure of the complex phase steel usually contains 5%-40% ferrite to improve the weldability of the alloy, increase the strength and improve the resistance to stress corrosion. For example, Cr28%-Ni10%-C0.30% high-carbon high-chromium alloy steel has good resistance to sulfuric acid corrosion and can be used in castings. The controllable ferrite section steel developed on this basis has higher strength and good stress corrosion resistance in sulfate, and is often used in installations in the petroleum industry.
This kind of product is very common in our real life, has high practicability, and has a wide range of applications. If you have any intentions, please contact us.