Corrosion Resistance

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 floor defect. Rolex has been identified to send steel again when it does not meet their exacting specs. After casting and inspection, the steel is then re-melted in a vacuum to purify it and remove any inclusions that might diminish its corrosion resistance and result in problems in polishing. Noble steel wristwatches such as gold or platinum watches don’t have corrosion issues, but base metal does. Until the widespread use of stainless-steel, older watches utilized primitive stainless casebacks and a few type of base-metallic case.

West Yorkshire Steel Ltd

904L chrome steel doesn’t machine properly which makes it costlier to producer and fabricate into a wrist watch. Subsequently, Rolex designs its personal instruments to manufacture 904L watch circumstances SA240 316 Stainless steel plate, casebacks, and bracelets including a 250 ton press to stamp the initial cases. 361L metal is the industry standard metal for wristwatches.

Only a small variety of producers use 904L stainless-steel rather than 316L, but Rolex is the brand that screams the very best about it. In 2003 Rolex’s entire production line modified to 904L metal. Two-tone Rolex watches have their bezels, winding crowns, and heart bracelet hyperlinks craft from 18-karat gold, whereas the center case and outer links of the bracelet are produced from 904L stainless steel.

About our products: China united iron and steel limited is a company specialized in mild steel plate, Stainless steel plates, Stainless welded pipe, and seamless stainless pipes. Our supply capacity per year is about 8,900,000 tons stainless plate/coil according to ASTM A240, ASME SA240, JIS, AISI, EN, AND Other special requirements from our customer.

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  • Rolex aficionados have commented that some individuals sweat more acidic than others as demonstrated by finding pits in 316L wrist watches making 904L stainless extra desirable.
  • Harder and more rust and corrosion-resistant than other steels, this 904L steel can take and hold a polish extremely well.
  • Rolex calls 904L stainless-steel a “corrosion-resistant superalloy.” 904L differs from 316L due to further Chromium, Molybdenum, Nickel, and Copper which supplies it improved resistance to acids.
  • Rolex calls 904L stainless-steel a “corrosion-resistant superalloy.” 904L differs from 316L due to extra Chromium, Molybdenum, Nickel, and Copper that provides it improved resistance to acids.
  • 316L is taken into account a more durable, tougher, “marine grade” metal, but it doesn’t have luster and acid resistance of Rolex’s 904L stainless steel.
  • This is why steel Rolex watches look completely different than different metal watches.

Rolex calls 904L stainless-steel a “corrosion-resistant superalloy.” 904L differs from 316L due to additional Chromium, Molybdenum, Nickel, and Copper that provides it improved resistance to acids. 316L is considered a tougher, harder, “marine grade” steel, but it does not have luster and acid resistance of Rolex’s 904L stainless-steel.

Rolex aficionados have commented that some people sweat more acidic than others as demonstrated by discovering pits in 316L wrist watches making 904L stainless extra desirable. Harder and more rust and corrosion-resistant than other steels, this 904L metal can take and maintain a polish extremely nicely. This is why steel Rolex watches look different than different metal watches. Rolex calls 904L stainless-steel a “corrosion-resistant superalloy.” 904L differs from 316L because of extra Chromium, Molybdenum, Nickel, and Copper which provides it improved resistance to acids. 316L is considered a harder, more durable, “marine grade” steel, however it doesn’t have luster and acid resistance of 904L.

Is 904l better than 316l?

The 316L Stainless steel is far less scratch resistant than the 904L because it has a much higher Rockwell hardness. The main advantage of 904L over 316L is its resistance to acids: “The addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly sulphuric acid.”

Unlike the remainder of the industry, Rolex makes use of 904L stainless-steel for qualities that Rolex believes surpasses the business standard. Nowadays, most stainless steel wristwatches are manufactured from 316L stainless-steel, and for a time, so was Rolex. Even although 316L steel was created so as to prevent rust and pits from salt water and sweat, Rolex was discovering extra put on within the case back threads and watch case. Salt and other minerals are the catalysts wanted for corrosion and deterioration of the threads holding the case again. They may clearly see that gold and platinum watches didn’t have this corrosion problem, so it needed fixing.

In 2003 their complete production line modified to 904L, although it was as early as 1988 that they launched their first 904L metal watch with several variations of the Sea-Dweller. Once obtained from Rolex steel suppliers, Rolex casts and scans it using an electron microscope that is able to detecting the slightest structural or floor defect. Rolex has been identified to ship steel again when it doesn’t meet its exacting specifications or when impurities are found.

What watches use 904l steel?

1. Rolex. One of the metals developed by Rolex is a material known as Rolesium, a combination of 904L stainless steel superalloy and 950 platinum. Rolesium was used in the 40-mm diameter Oyster case of the Rolex Yacht-Master seen here.