Why Does Rolex Use 904l Stainless Steel?

Why Does Rolex Use 904l Stainless Steel?

There are many forms of corrosion that affect stainless-steel metals. Corrosion mechanisms fall into five totally different classes; pitting corrosion, crevice corrosion, galvanic corrosion, stress-corrosion Cracking, and general corrosion. Grade 904L stainless steels are excessive purity steels with low sulphur content material.

Steel Vs. 316l In Watchmaking Industry

Niobium is a superb alternative for individuals with metallic allergy symptoms. It is very proof against corrosion and other reactions, and is used in medical implants. Niobium is not plated or painted, so the color won’t flake or chip.

It is the molybdenum that enhances corrosion resistance in environments wealthy in salt air and chloride – giving 316L the moniker of “marine grade” stainless-steel. Rolex calls 904L stainless-steel a “corrosion-resistant superalloy.” 904L differs from 316L due to additional Chromium, Molybdenum, Nickel, and Copper that gives it improved resistance to acids. 316L is considered a more durable, harder, “marine grade” metal, however it does not have luster and acid resistance of Rolex’s 904L chrome steel.

  • 316L is taken into account a tougher, more durable, “marine grade” metal, however it does not have luster and acid resistance of 904L.
  • This is why steel Rolex watches look completely different than other steel watches.
  • Rolex makes use of 904L with the best of quality control.
  • Harder and extra rust and corrosion-resistant than other steels, this 904L metal can take and hold a polish extremely well.
  • Rolex calls 904L stainless-steel a “corrosion-resistant superalloy.” 904L differs from 316L because of further Chromium, Molybdenum, Nickel, and Copper which supplies it improved resistance to acids.

Weirdly sufficient, she has some cheapy gold-toned earrings that do not cause this problem, so I am flummoxed. Like most different stainless steel, it contains 8-10.5% nickel, making it unsuitable for folks with nickel allergic reactions.

316l stainless steel vs 904l

If you’re designing hypoallergenic earrings or other jewelry, what are your choices? Is surgical stainless-steel the identical as hypoallergenic or nickel free? The solutions aren’t so simple as you might hope, however there are some great (and economical) selections. Grade 904L stainless steels have excellent resistance to heat seawater and chloride assault.

Their numbers are determined by their alloy composition. Unlike the energetic metals mentioned above, stainless-steel is known as passive because it accommodates different metals including chromium. For a cloth to be thought-about stainless steel, no less than 10.5% of the make-up have to be chromium. Additional alloys typically embrace nickel, titanium, aluminum, copper, nitrogen, phosphorous, selenium and molybdenum. The key difference between the 304 and the 316L is the addition of molybdenum in the 316L.