Rolex Watchmaking

We produce ASTM/ASME Grade 304, Grade 304L,304h, 316, 316L, 316H, 316TI, 321, 321H, 309S, 309H, 310S, 310H, 410S, 2205, 904L, 2507, 254, gh3030, 625, 253MA, S30815, 317L, Type 317, 316lN, 8020, 800, 800H, C276, S32304 and others special requirement stainless steel grade.

 

We have thousands tons stock of stainless steel sheet and coil with various size and grade,mainly include austenitic stainless steel, martens stainless steel (including precipitation hardened stainless steel sheet & coil), ferritic stainless steel, and duplex stainless steel.

Characteristics of Stainless Steel Sheet and Plate:
High corrosion resistance
High strength
High toughness and impact resistance
Temperature resistance
High workability, including machining, stamping, fabricating and welding
Smooth surface finish that can be easily clean

Grade 904L stainless steels have glorious resistance to warm seawater and chloride assault. The excessive resistance of grade 904L against stress corrosion cracking is because of the presence of excessive amounts of nickel in its composition. Moreover, the addition of copper to these grades develops resistance to sulphuric acid and different lowering agents in both aggressive and delicate situations. Nowadays, most stainless-steel wristwatches are made of 316L stainless-steel, and for a time, so was Rolex. Even though 316L steel was created so as to stop rust and pits from salt water and sweat, Rolex was discovering extra put on in the case again threads and watch case.

Grade 904L stainless steels offer good oxidation resistance. However, the structural stability of this grade collapses at excessive temperatures, significantly above four hundred°C. Rolex was not the first watch model to make use of 904L stainless steel. That honour, as so many who Rolex claims for itself, goes to Omega. The unique Omega Seamaster PloProf 600M was made from a single block of 904L stainless-steel.

• In addition to watches, this alloy can also be generally used in the meals business, the medical area, and a wide variety of water and marine applications.
• Its popularity in these areas comes from the properties which make it proof against rust and corrosion.
• You may see some watch brands discuss with 316L as surgical grade steel or marine grade steel.

So despite the fact that 904L steel is best than 316L steel for watches, it is costlier, requires particular tools and abilities, and is overall harder to work with. This has prevented different brands from profiting from it, and is one thing special that Rolex has. The benefit is obvious when you deal with any steel Rolex watch. Rolex used to make use of the same steel as everyone else, but in around 2003 they moved their complete steel production to 904L steel.

In 1988 they released their first 904L steel watch with a few versions of the Sea-Dweller. 904L steel is more rust and corrosion resistant, and is considerably more durable than other steels. Most necessary to Rolex, is that 904L steel, when worked correctly, is able to take polishes extremely nicely. If you have ever seen that steel on a Rolex watch appears different than different watches, it’s because of 904L steel, and how Rolex has realized to work with it. Welding of grade 904L stainless steels can be carried out using all conventional strategies.

excessive carbon steel grades

These grades could be readily bent to a small radius beneath cold circumstances. Although subsequent annealing just isn’t required in most cases, it ought to be carried out when the fabrication is performed underneath extreme stress corrosion cracking situations.

Our stainless production range

Rolex needed to exchange most of their steel working machines and instruments to deal with 904L steel. It made sense for them because of the quantity of watches they produce, and because they make all their parts in-home. Most different brands get their instances produced from exterior suppliers.

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The steel can be proof against stress corrosion cracking and crevice corrosion. Grade 904L is non-magnetic, and presents excellent formability, toughness and weldability.