What's the difference between 316L and 904L stainless steel?

What's the difference between 316L and 904L stainless steel?

Watchmaking is a highly complex field that demands high-quality materials. Steel is one of the most widely used materials in watchmaking, and 316L and 904L stainless steels are particularly popular. Although similar, they are not identical and have different properties and applications.

 

Steel 316L is a nickel-chromium-molybdenum-manganese alloy characterized by excellent corrosion resistance, high hardness and ductility, and good heat resistance. It is commonly used for mid-range watches, as it is highly resistant and has excellent durability. 

 

904L steel is an alloy combining high concentrations of nickel, chromium and molybdenum, and is characterized by excellent corrosion and heat resistance, as well as being highly resistant to oxidation and acid formation. This makes 904L stainless steel particularly suitable for use in extreme conditions, such as salty or acidic marine environments. It is therefore ideal for high-quality watches. 

 

While 316L steel is highly resistant and durable, 904L steel is the highest grade of stainless steel available, offering extreme resistance and greater longevity. It is therefore more suitable for luxury watches that need to be highly durable and resistant. That's why we use it for our entire range, to ensure optimum quality.