316L Stainless Steel: Ultra-Low Carbon Molybdenum Alloy For Severe CorrosionEnvironments

Apr 14, 2026

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Overview: 316L is the ultra-low carbon variant of 316 stainless steel, with a maximum carbon content of 0.03%. It combines the molybdenum-enhanced corrosion resistance of 316 with superior intergranular corrosion resistance, making it ideal for severe corrosive and welded applications.

Chemical Composition (wt%): Chromium (Cr): 16.0-18.0; Nickel (Ni): 10.0-14.0; Molybdenum (Mo): 2.0-3.0; Carbon (C): ≤0.03; Manganese (Mn): ≤2.00; Silicon (Si): ≤1.00; Phosphorus (P): ≤0.045; Sulfur (S): ≤0.030; Iron (Fe): Balance.

Typical Mechanical Properties (Annealed Condition): Tensile Strength: ≥485 MPa; Yield Strength: ≥170 MPa; Elongation: ≥40%; Hardness (Brinell): ≤217 HB.

Core Advantages: Excellent intergranular corrosion resistance (no post-weld annealing needed); superior durability in chlorides, acids, and marine environments; non-magnetic; good formability and weldability; ideal for heavy welded sections and harsh corrosive conditions.

Applications: Offshore structures, pharmaceutical and biotech equipment, pulp and paper processing machinery, seawater desalination systems, high-purity chemical pipelines, marine coastal equipment, and medical implants.

Equivalent Grades: UNS S31603; EN 1.4404; JIS SUS316L; GB/T 022Cr17Ni12Mo2.

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If you have project requirements for stainless steel, we welcome your order. GNEE has a large inventory of popular products for you to choose from. It can be processed into various practical product forms, including plates, coils, tubes, bars, wires, etc. For detailed chemical composition information and free samples, please contact our factory immediately. We offer competitive prices and excellent service.Email: info@gneestainless.com

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Testing and Documentation: Factory test certificate, EN 10204 3.1, chemical report, mechanical report, destructive testing report, non-destructive testing report, PMI test report, visual inspection report, third-party inspection report, NABL certified laboratory report.
Packaging: Wooden crate packaging, bubble wrap packaging, steel strapping, or packaging according to customer requirements.

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