Research guide
The Truth About 904L Steel Claims
Why cheap replica sites lie about using 904L stainless steel, and how to tell real 904L from 316L.
Nearly every replica watch website claims their watches are made of "904L stainless steel." However, 904L steel is expensive to source and difficult to machine. In this guide, we expose the industry truth about steel claims and how to identify real 904L.
What is 904L Stainless Steel?
904L is a low-carbon, high-alloy stainless steel that contains higher amounts of chromium, nickel, and molybdenum than standard 316L steel. Rolex famously transitioned to 904L because it is highly resistant to acids and chloride corrosion (ideal for ocean diving) and can take a slightly higher polish.
The Industry Scam: 316L Passed Off as 904L
High-quality 316L steel feels and looks almost identical to 904L to the naked eye. Shady sellers of $100–$200 replica watches will slap a "904L" sticker on a cheap 316L (or even low-grade 304 alloy) watch because they know average buyers cannot tell the difference.
Do Premium Factories (VSF, ARF) Use Real 904L?
Yes. Premium factories like VS Factory and ARF Factory use authentic 904L stainless steel for their high-end models (such as the Submariner and Datejust). They have invested in advanced heavy-duty CNC machinery capable of milling the harder 904L alloy.
How to Verify Real 904L Stainless Steel
If you want to verify the steel quality on your replica watch, look for these key indicators:
- The "Warm" Luster: 904L has a slightly warmer, greyer hue under direct sunlight compared to the colder, brighter silver tone of 316L. This is due to the higher nickel and copper content.
- Corrosion Resistance: If you expose 316L steel to highly concentrated salt water or hydrochloric acid for extended periods, it will eventually show microscopic pitting. Real 904L will remain completely pristine.
- Weight: 904L is slightly denser than 316L. A premium VSF Submariner 126610LN weighs approximately 152 to 155 grams (depending on link count), which is identical to the genuine Rolex weight. Low-tier replicas are often much lighter.
Why Steel Quality Matters
While 316L steel is perfectly fine for everyday wear, real 904L steel provides that genuine Rolex shine and ensures that your watch will never rust, tarnish, or cause skin allergies. At TimeMax, we verify all our premium watches with professional alloy testing kits to ensure you get authentic 904L steel.
Order with a real person, protected end to end
We are a first-tier dealer for VSF, ARF, Rich Factory. Every order is confirmed with our team, paid by PayPal Goods & Services, QC-filmed in 3–5 days for your approval, then shipped by FedEx for $40. The Optional Presentation Box & Accessory Set ($20) is an optional add-on and is not included in the watch base price.
