321 stainless steel rod is a stainless steel material containing titanium stable elements, which has excellent high-temperature resistance and corrosion resistance, and is particularly suitable for applications working in high-temperature environments, such as aerospace, petrochemical, and engine component manufacturing. It also has good mechanical properties and weldability, and can be processed through common welding and processing methods. It is widely used in various occasions that require high temperature and corrosion resistance.