AN OBSESSION WITH PERFECTION
904L STEEL - ROLEX OYSTER PERPETUAL
Rolex uses 904L steel for its steel watch cases. 904L is usually reserved for the chemical industry, where maximum resistance against corrosion proves essential. In this manner, 904L perfectly complements the other precious metals used by Rolex. A super alloy, 904L is unimaginably resistant and able to be polished to a high degree.
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