Many watch lovers are the loyal fan of Rolex but few of them know about the 904L steel well. What is the difference between the 316 L steel and 904L steel? We found that the steel models of many famous watch brands such as Tudor, Omega, Patek Philippe and so on are made of the 316 L steel. So what is the 904 L steel of popular fake Rolex watches?
The 904 L steel is like the god in many fans’ mind. In fact, Rolex adopted the 316 L steel to create the steel models like other watch brands. The distinctive 904 L was firstly used on few versions of Sea-Dweller in 1985. Till 2003, almost all the steel models have been made of the 904L steel. Rolex is the only watch brand that uses the 904L steel on the wristwatches. The model on the picture is the 50th anniversary edition of the first Sea-Dweller used the 904L steel. Rolex Sea-Dweller copy with Oystersteel case was created to celebrate its 50th anniversary in 2017.
The letter L in 904L represents the “Lower Carbon”. It offers greater resistance to the corrosion. The Nickel, chromium, molybdenum in 904L is 1.6 times higher than 316L steel and all these three metals are heavier than iron. The 904L steel of the imitation watch with blue dial offers greater stability in extreme environment.