Its high alloying content also gives it greater resistance to chloride stress corrosion cracking, but it is still susceptible.
Its low carbon content makes it resistant to sensitization by welding and prevents intergranular corrosion.
[7] Omega SA experimented with 904L or 'Uranus Steel' with the PloProf dive watches in 1971–72.
The inspiration came from French deep sea diving company COMEX, who used this steel in their diving bells due to superior corrosion resistance in salt water.
[9] Beside its corrosion resistance, watch manufacturers, such as Rolex, also choose this variety of stainless steel because it takes a higher polish than 316L grade stainless steel commonly used by other watch brands such as Seiko, Omega, and Tudor