Quelle est la différence entre l'acier inoxydable 316L et l'acier 904L ?

What is the difference between 316L stainless steel and 904L stainless steel?

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

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

904L steel is an alloy that combines high concentrations of nickel, chromium and molybdenum that is characterized by excellent resistance to corrosion and heat, and is also very resistant to oxidation and the formation of acids. 904L stainless steel is therefore particularly suitable for use in extreme conditions, such as saline or acidic marine environments. It is therefore ideal for high-quality watches. 

While 316L steel is very strong and durable, 904L steel is the highest grade of stainless steel available and offers extreme strength and better longevity. It is therefore more suitable for luxury watches which must be very durable and resistant. This is why we use it for our entire range in order to offer optimal quality.