What Is 904L Stainless Steel?
904L stainless steel is a high-grade alloy originally developed for aerospace and chemical applications, where corrosion resistance, durability, and surface finish are critical. In the watch world, it gained global recognition after Rolex adopted it for its cases and bracelets.
Unlike standard watch steels, 904L contains higher levels of chromium, nickel, and molybdenum, giving it superior resistance to oxidation, acids, sweat, and environmental wear.
Today, top-tier manufacturers use 904L to produce the most accurate super clone watches, closely matching the material used in genuine luxury timepieces.
904L vs 316L Stainless Steel (Why It Matters)
Most ordinary replica watches use 316L stainless steel, which is durable but lacks the depth and refinement of 904L. While both steels are strong, the difference becomes obvious in finish, weight, and long-term wear.
904L stainless steel advantages:
-
Brighter, whiter polish
-
Higher resistance to corrosion and discoloration
-
Better scratch tolerance over time
-
More authentic weight and wrist feel
316L stainless steel limitations:
-
Slightly duller finish
-
More prone to micro-corrosion over years of wear
-
Common in mid-tier replicas
Why 904L Stainless Steel Is Used in High-End Super Clones
Factories producing entry-level replicas often avoid 904L because it is harder to machine, polish, and finish. It requires advanced CNC tooling and longer production time.
Top factories, however, use 904L to achieve:
-
Accurate case geometry
-
Proper bracelet sheen
-
Genuine-like brushing and polishing transitions
-
Long-term durability that cheaper watches can’t match
This is why 904L is almost always found in premium 1:1 super clone watches, not budget replicas.
904L Stainless Steel and Clean Factory Watches
Clean Factory is widely recognized for its precise use of 904L stainless steel across its Rolex super clone lineup. The factory is known for maintaining correct steel composition, finishing techniques, and weight balance—details that collectors immediately notice.
Clean Factory models often feature:
-
Crisp polished bevels
-
Consistent brushing on lugs and bracelets
-
Correct reflection under natural light
-
Better aging characteristics over time
Can You Feel the Difference on the Wrist?
Yes—especially for experienced buyers.
Watches made with 904L stainless steel tend to feel:
-
More solid
-
Better balanced
-
Cooler to the touch
-
Smoother along bracelet edges
These subtle characteristics contribute heavily to what enthusiasts describe as “real wrist presence”, a key reason buyers choose higher-end super clones over cheaper alternatives.