What type of stainless steel does Rolex use for most watches?

Rolex uses 904L stainless steel for most of its steel watches.

Rolex adopted 904L steel in 1985, using an alloy known for high resistance to corrosion. It contains more chromium, nickel and molybdenum than common 316L stainless steel, giving it strong resistance to aggressive environments such as salt water and industrial atmospheres. Rolex refers to its modern version as Oystersteel.

The material is also valued for the bright finish it can take during polishing. That does not make it scratch-proof: 904L is comparatively softer than some specialty tool steels, so polished surfaces can still show marks. Its manufacturing and finishing requirements are also more demanding than those of the 316L steel commonly used across the watch industry.

“Most watches” does not mean every Rolex is made from 904L. Rolex also produces models in yellow, white and Everose gold, as well as watches using materials such as titanium. The key distinction in this quiz is between 904L and 316L: both are stainless steels, but 904L is the alloy associated with Rolex’s steel cases and bracelets.