SS 316 (Molybdenum-Alloyed Austenitic Stainless Steel) Stainless Steel 316, commonly known as marine-grade stainless steel, is an austenitic chromium-nickel alloy with added molybdenum, offering enhanced corrosion protection—particularly in saltwater, acidic, and aggressive chemical environments. Its resistance to pitting, crevice corrosion, and chemical attack makes it more durable than SS 304. SS 316 retains its non-magnetic behavior when annealed, and is ideal for precision fabrication, hygienic environments, and long-term exposure to harsh conditions. Core Attributes: Molybdenum addition improves resistance to chlorides and acids Remains tough and strong even at elevated temperatures Offers smooth welding and forming performance Retains non-magnetic structure post-annealing Suitable for critical hygiene and marine applications Chemical Composition: Element Proportion (%) Chromium 16.0 – 18.0 Nickel 10.0 – 14.0 Molybdenum 2.0 – 3.0 Carbon ≤ 0.08 Manganese ≤ 2.00 Silicon ≤ 1.00 Phosphorus ≤ 0.045 Sulfur ≤ 0.030 Mechanical Properties: Property Value Yield Strength ≥ 205 MPa Tensile Strength ≥ 515 MPa Elongation ≥ 40% Hardness ≤ 217 HB Temperature Resistance Up to 870°C Major Uses: Saltwater-resistant marine parts Chemical and petrochemical processing equipment Food-grade production lines and tanks Pharmaceutical clean-room tools and vessels High-humidity or chloride-laden industrial zones Conclusion: SS 316 stands out for its resilience in corrosive and marine environments. Its blend of durability, weldability, and chemical resistance ensures reliable performance in hygienic, industrial, and outdoor applications requiring extended service life.