Simple classification of stainless steel 300 series pipes and their main uses

Stainless steel is a common and widely used material with many types and characteristics. Among the many stainless steel series, 300 series stainless steel has attracted much attention due to its excellent corrosion resistance and diverse application scenarios.
This article will briefly introduce the simple classification and main uses of stainless steel 300 series, and take you to a deeper understanding of the mystery of this practical material.

1. Introduction to stainless steel 300 series
The stainless steel 300 series mainly includes austenitic stainless steel, which is usually divided into several main models such as 304, 316, 321, etc. Each model is suitable for various specific occasions according to different chemical composition and mechanical properties.
304 stainless steel pipe-a representative of multi-purpose
304 stainless steel is one of the most common austenitic stainless steels. It is composed of 18% chromium (Cr) and 8% nickel (Ni) and has good corrosion resistance, oxidation resistance and processability. 304 stainless steel is widely used in food industry, medical equipment, architectural decoration, furniture manufacturing and other fields.
For example, most of the common kitchen utensils, tableware, sanitary ware, etc. in daily life are made of 304 stainless steel. In addition, due to its beautiful appearance and good corrosion resistance, 304 stainless steel is also an ideal choice for building decoration materials.
316 stainless steel pipe - a choice for high corrosion resistance
Compared with 304 stainless steel, 316 stainless steel has added molybdenum (Mo) to its composition, generally at a content of 2-3%. This addition makes 316 stainless steel more outstanding in corrosion resistance, especially in high-salinity and chemical corrosion environments.
316 stainless steel corrosion-resistant pipes are often used in marine environments, chemical equipment, medical equipment, and high-end building decoration. For example, 316 stainless steel pipes are usually selected for places with high requirements for material corrosion resistance, such as building facade decoration, shipbuilding, and seawater treatment equipment in coastal areas.
321 stainless steel high-temperature resistant pipe - a reliable material for high temperature environments
321 stainless steel is based on 304 stainless steel with titanium (Ti) added, and the titanium content is generally around 0.5%. The addition of titanium can significantly improve the intergranular corrosion resistance of stainless steel, especially in high-temperature environments.
Therefore, 321 stainless steel is often used in the manufacture of equipment in high-temperature working environments, such as heat exchangers, furnace components, automobile exhaust systems, etc.