X2CrNiMo17-12-2 1.4404 AISI 316L Blind Pipe Flange for Corrosion Resistance
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Product Description
X2CrNiMo17-12-2 1.4404 EN 1.4404 Flange
1.4404 Steel (AISI 316L) is an austenitic stainless steel grade internationally known as AISI 316L. The "L" designation stands for "low carbon," which significantly improves corrosion resistance, particularly against intergranular corrosion (weld decay).
Chemical Composition
| Element | Content (Weight %) | Purpose/Effect |
|---|---|---|
| Carbon (C) | ≤ 0.030 | Very low carbon content to minimize carbide precipitation during welding |
| Chromium (Cr) | 16.5 – 18.5 | Main element for corrosion resistance; forms passive chromium oxide layer |
| Nickel (Ni) | 10.0 – 13.0 | Stabilizes austenitic structure and improves toughness and corrosion resistance |
| Molybdenum (Mo) | 2.0 – 2.5 | Key for improved resistance to pitting and crevice corrosion in chloride environments |
| Manganese (Mn) | ≤ 2.0 | Helps deoxidation and improves hot-working properties |
| Silicon (Si) | ≤ 1.0 | Aids deoxidation during steelmaking |
| Phosphorus (P) | ≤ 0.045 | - |
| Sulfur (S) | ≤ 0.015 | Kept very low to maintain toughness and corrosion resistance |
| Nitrogen (N) | ≤ 0.11 | Strengthens austenitic matrix; controlled to prevent corrosion issues |
| Iron (Fe) | Balance | Base metal |
Summary: 1.4404 is a low-carbon, molybdenum-alloyed, austenitic stainless steel (316L) chosen when you need good general corrosion resistance plus better performance in chlorides than standard 304/1.4301, and better weldability than 1.4401/316 due to its lower carbon content.
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Company
BEST PIPELINE EQUIPMENT CO.,LTD
Location
China Factory : Suzhou Industrial Park, JiangSu Province,China
Contact Person
amy