Seiko’s Ever-Brilliant Steel: the world’s most corrosion resistant steel, perfectly suited for a diver’s watch for deep sea use.
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This stainless steel has a PREN (Pitting Resistance Equivalent Number) value 1.7 times higher than that of the grade of steel used in most high-end watches. PREN is a widely accepted standard used to measure corrosion resistance. ** as of December 2019, based on Seiko’s research.
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Heeft iemand al dit nieuwe stukje metaal… en kan het vergelijken met 316L ??
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Ik heb die 3 modellen hier nog niet voorbij zien komen.
Vraag me af of je als leek een verschil ziet of merkt.
Most high end watches gebruiken 316L.
Specifically, Seiko says Ever-Brilliant Steel has a pitting resistance equivalent number (PREN) of 1.7 times 316L steel. With 316L steel having a PREN of around 25, Ever-Brilliant Steel should surpass 40 – usually the benchmark for materials uses for marine applications.
Een uitzondering was tot nu toe Rolex.
As we know, stainless steels are renowned for their corrosion resistance characteristics, but of course some grades have better resistance than others. For many years Rolex used the popular stainless steel grade 316L, which is the standard for round 95% of the watch industry. In 2001 however, they changed from using 316L to 904L and are currently the only watchmaker in the world to use this grade for their watchcases. The main reason for the change was the higher pitting resistance equivalent number (PREN) measurement of 904L, which has a value of approximately 36 PREN in comparison to that of 316L that has approximately 26 PREN.
Edit: over 904L zegt strapcode
Dus dat zou bij het SeikoSuperStaal nog beterderder moeten zijn…
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