What is the difference between 304, 304L, 304H, 304N and 304LN stainless steel pipes?

304 stainless steel pipes:

This is the basic 304 stainless steel grade, also known as 18-8 stainless steel. It contains about 18% chromium and 8% nickel, and has good corrosion resistance and mechanical properties. It is suitable for a wide range of applications, such as construction, manufacturing, food processing, etc.

304L stainless steel pipes:

304L is a low-carbon version of 304 stainless steel, with a lower carbon content, generally less than 0.03%. This grade has good corrosion resistance and is particularly suitable for applications in corrosive environments, such as the chemical industry, marine engineering, etc.

304H stainless steel pipes:

304H is a high-carbon version of 304 stainless steel, with a carbon content usually between 0.04% and 0.1%. This grade has good heat resistance in high-temperature environments and is suitable for high-temperature equipment manufacturing, such as petroleum refining, furnace manufacturing, etc.

304N stainless steel pipes:

304N is a nitrogen-containing stainless steel that improves strength and corrosion resistance by adding nitrogen. It has high strength and toughness and is suitable for applications with special requirements, such as high-pressure vessels, chemical equipment, etc.

304LN stainless steel pipes:

304LN is a low carbon, low nitrogen version of 304 stainless steel, with good corrosion resistance and stress corrosion cracking resistance. It is often used in corrosive environments such as chemical industry and marine engineering.

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