304, 304H and 304L are all variations of the popular austenitic stainless steel grade 304. While they may seem similar in appearance and composition, there are some important differences between them:
304: This is the most commonly used stainless steel grade of all. It contains approximately 18% chromium and 8% nickel, which gives it excellent corrosion resistance and high strength in low-temperature environments.
304L: This variant has a lower carbon content than 304, which makes it more resistant to sensitization and thus less prone to corrosion. It is usually employed for applications where welding is required.
304H: This variant is heat-resistant and is primarily used in high-temperature environments, such as the manufacture of boilers, furnaces, and heat exchangers. It contains a higher carbon content than 304 and offers greater strength in high-temperature conditions.
In summary, the differences between 304, 304H, and 304L lie in their carbon content and their suitability for different environments. Regardless of which variant you use, the 304 stainless steel grade is an excellent choice for a wide range of applications. Its strength, corrosion resistance, and aesthetic appeal make it a popular material in industries ranging from automotive engineering to food processing.
