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Home / Products / Welding Neck Flange / 317L Stainless Steel EN1092 Standard Corrosion Resistant Welding Neck Forged Flange
quality 317L Stainless Steel EN1092 Standard Corrosion Resistant Welding Neck Forged Flange factory
quality 317L Stainless Steel EN1092 Standard Corrosion Resistant Welding Neck Forged Flange factory
quality 317L Stainless Steel EN1092 Standard Corrosion Resistant Welding Neck Forged Flange factory
quality 317L Stainless Steel EN1092 Standard Corrosion Resistant Welding Neck Forged Flange factory
quality 317L Stainless Steel EN1092 Standard Corrosion Resistant Welding Neck Forged Flange factory

317L Stainless Steel EN1092 Standard Corrosion Resistant Welding Neck Forged Flange

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seamless mild steel pipe

seamless steel tube

seamless pipe steel
Product Summary
317L stainless steel EN1092 forged flanges offer superior corrosion resistance in aggressive chloride and acidic environments. Key features include high molybdenum (3-4%) for enhanced pitting resistance, low carbon content (max 0.03%) for excellent weldability, and controlled composition (18-20% Cr, 11-15% Ni) ensuring durability and reliability.

Product Details

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317L Stainless Steel Welding Neck Flange

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EN1092 Standard Forged Flange

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Corrosion Resistant Stainless Steel Flange
Product Description
317L Stainless Steel EN1092 Forged Flanges
317L is a low-carbon, molybdenum-bearing austenitic stainless steel designed for excellent corrosion resistance, particularly in aggressive chloride-containing and acidic environments.
Chemical Composition (UNS S31703)
Element Composition (%)
Carbon (C) max 0.03%
Chromium (Cr) 18.0 - 20.0%
Nickel (Ni) 11.0 - 15.0%
Molybdenum (Mo) 3.0 - 4.0%
Manganese (Mn) max 2.0%
Silicon (Si) max 0.75%
Phosphorus (P) max 0.045%
Sulfur (S) max 0.03%
Nitrogen (N) max ~0.10%
Iron (Fe) Balance
Key Element Functions
High Chromium + Nickel: Stabilizes the austenitic structure and provides excellent general corrosion and oxidation resistance.
High Molybdenum (3-4%): Significantly improves resistance to pitting and crevice corrosion in chloride environments and enhances resistance to certain acids.
Low Carbon Content: Maximum 0.03% carbon reduces carbide precipitation during welding, minimizing sensitization and intergranular corrosion.
Controlled Impurities: Low phosphorus and sulfur content maintains toughness, weldability, and corrosion resistance.
Design & Specification Note: Always refer to official standards or mill certificates for exact composition ranges, such as ASTM A240/A276 or EN/ISO equivalents. The essential chemical identity of 317L stainless steel is approximately 19% Cr, 13% Ni, 3-4% Mo, with very low carbon content.

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