X6CrNiTiB18-10 1.4941 EN 1092-1 Stainless Steel Welding Neck Flange
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Product Description
X6CrNiTiB18-10 1.4941 EN 1092-1 Flange - Stainless Steel Flanges EN 1092
Steel 1.4941 is a specific high-temperature austenitic stainless steel grade, commonly used in power plant and turbine applications. Its chemical composition is defined in standards (e.g., EN) and belongs to the same family as heat-resistant steels like X6CrNi18-11.
Chemical Composition (Weight Percent)
| Element | Content Range (wt%) |
|---|---|
| Carbon (C) | 0.08 – 0.14 |
| Silicon (Si) | ≤ 1.0 |
| Manganese (Mn) | ≤ 2.0 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.015 |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 10.5 – 13.0 |
| Niobium (Nb) | 0.6 – 1.1 (Nb + Ta) |
| Nitrogen (N) | ≤ 0.11 |
| Iron (Fe) | Balance |
Key Element Functions
- Chromium (17–19%): Provides excellent oxidation and corrosion resistance at elevated temperatures by forming a protective Cr₂O₃ layer.
- Nickel (10.5–13%): Stabilizes the austenitic structure, enhancing toughness and strength at high temperatures.
- Niobium (0.6–1.1%): Acts as a stabilizer against carbide precipitation, improving creep resistance and preventing intergranular corrosion.
- Carbon (0.08–0.14%): Enhances high-temperature (creep) strength while being controlled to avoid excessive carbide formation.
- Low Phosphorus and Sulfur: Limited impurities improve toughness, weldability, and resistance to hot cracking.
Application Note: For specific applications (boiler tubes, superheater components, turbine parts), always verify the exact standard or mill certificate. The typical composition ranges may vary slightly by standard (EN, DIN, manufacturer specifications). For design or welding calculations, rely on the heat analysis from the material test certificate (MTC) rather than generic tables.
Summary: 1.4941 is a niobium-stabilized, austenitic, heat-resistant stainless steel containing approximately 18% chromium, 11–12% nickel, controlled niobium content, and carefully regulated carbon levels. This composition is specifically designed for high-temperature, high-stress environments.
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BEST PIPELINE EQUIPMENT CO.,LTD
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China Factory : Suzhou Industrial Park, JiangSu Province,China
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