Which is better SUS 304 or SUS 316

The choice between SUS 304 and SUS 316 stainless steel depends on your specific requirements, as both materials are excellent but suited to different environments and applications.

SUS 304 is a general-purpose stainless steel that offers good corrosion resistance, durability, and affordability. It performs well in everyday environments, making it ideal for applications like kitchenware, sinks, automotive parts, and construction materials. However, it is less resistant to chlorides and may not be suitable for environments exposed to saltwater, chemicals, or high moisture levels.

SUS 316, on the other hand, contains added molybdenum, which significantly improves its resistance to corrosion, particularly against chlorides and harsh chemicals. It is preferred in marine environments, chemical processing industries, and medical applications where superior durability and resistance to pitting and crevice corrosion are critical. However, it is more expensive than SUS 304 due to its enhanced composition.

If cost and general utility are your priorities, SUS 304 is sufficient for most applications. If the material will face corrosive or challenging conditions, such as in coastal areas or industrial settings, SUS 316 is the better choice for its superior performance and longevity.