Stainless Steel Used by Rolex

While most high-end, luxury watch companies utilize 1.4435 (or 316L) Stainless Steel, Rolex uses 1.4439 (or 904L) Stainless Steel in timepiece production. While they both have the same grade of hardness, 904L has a slightly higher nickel discharge, and thus a slightly higher resistance to corrosion. 904L is mainly used in industry applications handling chlorides, sulfur dioxide gas or other toxic materials. While this may sound like overkill for use with luxury wristwatches, it's just another example of the quality of Rolex where only the best will do.
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