In today's industrial sector, stainless steel magnetic pumps have become indispensable equipment due to their many advantages such as leak-free operation, high efficiency, and environmental friendliness, thus finding widespread applications. This article primarily compares and analyzes the materials of stainless steel magnetic pumps, including 304, 316L, 2205, and titanium, to help readers better understand their performance and application scope.

Ⅰ.Material of 304 Stainless Steel Magnetic Pump

304 is a commonly used austenitic stainless steel containing 18% chromium and 8% nickel. This material features good machinability, aesthetics, and strong resistance to atmospheric and acid-base salts. However, its corrosion resistance and resistance to chloride are relatively weak, making it susceptible to corrosion in high-acid and high-chloride environments. Therefore, it is typically suitable for general conditions in chemical, light industry, food, pharmaceutical, and other fields.

Ⅱ.Material of 316L Stainless Steel Magnetic Pump

316L stainless steel is another austenitic stainless steel containing 16% chromium, 10% nickel, and 2% molybdenum. Compared to 304, 316L exhibits higher corrosion resistance and resistance to chloride. It has good resistance to corrosion from nitric acid, sulfuric acid, and most other organic and inorganic acids. Consequently, 316L stainless steel magnetic pumps are suitable for moderately corrosive media and are widely used in industries such as titanium dioxide, sulfuric acid, acid-base, and water treatment.

Ⅲ.Material of 2205 Stainless Steel Magnetic Pump

2205 is a duplex stainless steel containing 22% chromium, 5% nickel, and 3% molybdenum. It combines the corrosion resistance of austenitic stainless steel with the high strength of ferritic stainless steel. 2205 stainless steel magnetic pumps exhibit excellent corrosion resistance, especially to chloride-containing media such as seawater and brine. Additionally, they possess high fatigue strength and resistance to stress corrosion cracking. These pumps find extensive applications in industries including papermaking, seawater desalination, fertilizers, and petrochemicals.

Ⅳ.Material of Titanium Magnetic Pump

Titanium is a highly valuable metal known for its exceptional corrosion resistance, particularly in strong oxidizing acid environments such as nitric acid, sulfuric acid, and hydrofluoric acid. Titanium magnetic pumps demonstrate outstanding corrosion resistance and stable mechanical properties, even in high-temperature and high-pressure environments. They are widely used in high-end fields such as chemical and metallurgical industries, especially suitable for high-corrosion and high-temperature and pressure test environments.

In summary, stainless steel magnetic pumps of different materials vary in corrosion resistance and application scope. It is essential to select the appropriate pump material based on specific operating conditions and media types. 2205 stainless steel magnetic pumps exhibit significant advantages in stress corrosion resistance and resistance to chloride corrosion, making them the preferred choice in many industries. In future developments, the materials of stainless steel magnetic pumps will continue to be optimized and developed to meet the increasing demand for high-performance magnetic pumps in various fields.