Stainless Steel Grade 316L - Marine Grade Anti-Corrosion

 

Chemical/Standard Names:

S31603: This is the Unified Numbering System (UNS) designation for 316L stainless steel, used for consistent identification across standards and industries.

X2CrNiMo17-12-2: This is the European material designation under EN standards:

X: Stainless steel.

2: Refers to the low carbon content (~0.02%–0.03%, aligning with the "L").

CrNiMo: The primary alloying elements: chromium (Cr), nickel (Ni), and molybdenum (Mo).

17-12-2: Represents the approximate percentages of these elements:

17% chromium: Provides corrosion and oxidation resistance.

12% nickel: Improves toughness, ductility, and further enhances corrosion resistance.

2% molybdenum: Adds resistance to pitting and crevice corrosion, especially in chloride environments.

 

Chemical Composition

 

C	Si	Mn	P	S	Cr	Ni	Mo
≤ 0.030	≤ 0.75	≤ 2.00	≤ 0.045	≤ 0.015	16.00 – 18.00	10.00 – 14.00	2.00 – 3.00