Stainless Steel
Oystersteel belongs to the 904L steel family, which is especially resistant to corrosion and acquires an distinctive sheen when polished. The two metal grades are comparable in look, chemical make-up and traits. Both steels are sturdy and supply excellent resistance to corrosion and rust.
What makes the grade 316 alloy a super food grade metal sheet materials is the fact that it has a excessive resistance to acids, alkalis, and chlorides (corresponding to salt). Other austenitic stainless steels, such as grade 304 SS, can expertise severe pitting corrosion when uncovered to salt, which is usually present in meals merchandise. A Rolex watch should work completely and maintain its magnificence even in the harshest environments. That is why Rolex makes use of Oystersteel, a steel alloy particular to the model.
The chromium, molybdenum and nickel contents of 904L provide a greater chloride pitting corrosion resistance than that of 316 stainless in lots of environments. Another main distinction between 430 and 316 stainless-steel is that grade 430 SS is a ferritic alloy, meaning that it’s magnetic by default. Ferritic alloys like 430 SS also have extraordinary resistance to stress corrosion cracking (the growth of crack formations that can trigger sudden failure in corrosive environments).
Grade 904L stainless steels have glorious resistance to warm seawater and chloride assault. The excessive resistance of grade 904L against stress corrosion cracking is due to the presence of excessive quantities of nickel in its composition. Moreover, the addition of copper to those grades develops resistance to sulphuric acid and different lowering brokers in both SA240 316 Stainless steel plate aggressive and mild situations. Grade 904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid.
Why does Rolex use 904l steel?
Rolex calls 904L stainless steel a “corrosion-resistant superalloy.” 904L differs from 316L because of extra Chromium, Molybdenum, Nickel, and Copper which gives it improved resistance to acids. 316L is considered a tougher, harder, “marine grade” steel, but it does not have luster and acid resistance of 904L.
- Once acquired from Rolex’s metal suppliers, Rolex casts and scans it utilizing an electron microscope that is able to detecting the slightest structural or surface defect.
- Rolex has been known to ship steel again when it doesn’t meet their exacting specifications.
- 316L is considered a harder, tougher, “marine grade” metal, nevertheless it doesn’t have luster and acid resistance of 904L.
Please see our product range and grade.
What is 904l material?
904L is an austenitic stainless steel designed for moderate to high corrosion resistance. Its low carbon content improves cleanliness and weld strength.
The steel can be resistant to stress corrosion cracking and crevice corrosion. Grade 904L is non-magnetic, and offers excellent formability, toughness and weldability. Sorry guys but “Rolesium” is NOT an alloy, rather it’s a mixture of two completely different metals featured in the same watch. For instance in the offered Yacht Master the case is a 904L stainless steel and the bezel is a stable 950 platinum. Rolex uses ruthenium for his or her platinum alloy which incorporates ninety five% platinum and 5% ruthenium.
304 stainless-steel is essentially the most versatile and extensively used austenitic stainless steel on the planet, due to its corrosion resistance. 304 stainless can also be cheaper in cost in comparison with 316, one more reason for its reputation and widespread use. When you notice a Rolex Submariner, you’ll be able to take the world in a sweep. The watch epitomizes every thing that is known for precision. It is crucial to say that this is the primary waterproof wrist watch designed for a depth of 100 meters.
Example – Datejust with “two tone” bracelet, s/s case and gold bezel – this would be a “Rolesor” Rolex. 904L stainless steel stockholders and suppliers, delivering to the whole of the UK.West Yorkshire Steel are suppliers and stockholders of 904L stainless steel bar and plate. This grade is an austenitic chrome steel specification providing reasonable to high corrosion resistance. Its excessive alloy composition provides good resistance to pitting and corrosion in a variety of environments. The low carbon content of 904L improves its welding characteristics.