11CrMo9-10 EN1092-1 Type 13 Loose Flange PN16 Forged Lap Joint Flange
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Product Description
11CrMo9-10 EN1092-1 Type 13 Loose Flange 1.7383 PN16 Forged Flanges
11CrMo9-10 is a low-alloy creep-resistant steel commonly used for high-temperature applications such as boiler tubes, headers, and piping in power plants. It's standardized in EN 10216-2 (seamless steel tubes for pressure purposes) and similar European norms.
Chemical Composition
| Element | Content (Weight %) |
|---|---|
| Carbon (C) | 0.08 – 0.12 |
| Silicon (Si) | ≤ 0.50 |
| Manganese (Mn) | 0.30 – 0.70 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.010 |
| Chromium (Cr) | 2.00 – 2.50 |
| Molybdenum (Mo) | 0.90 – 1.10 |
| Nitrogen (N) | ≤ 0.030 |
| Nickel (Ni) | ≤ 0.30 (residual/limited) |
| Copper (Cu) | ≤ 0.30 (residual/limited) |
| Balance | Iron (Fe) |
Key Composition Benefits
- Chromium (~2–2.5%): Improves oxidation and corrosion resistance at elevated temperature. Helps maintain strength and structural stability under long-term heat exposure.
- Molybdenum (~1%): Significantly boosts high-temperature strength and creep resistance. Improves hardenability, helping the steel retain properties after heat treatment.
- Low Carbon (~0.1%): Balances weldability and strength. Minimizes risk of brittle microstructures and excessive hardness in the heat-affected zone.
- Tight Limits on P and S: Reduce hot-shortness and brittleness. Important for components under pressure and thermal cycling.
Because of this alloy balance, 11CrMo9-10 is chosen in power and process industries where components must operate safely for thousands of hours at temperatures often in the 500–600 °C range, with good weldability and long-term creep performance.
Important Note: If you're working on design, welding procedure qualification, or material substitution, always confirm the exact limits from the specific product standard (e.g., EN 10216-2) and the mill test certificate, since minor variations and tighter internal limits are common from different manufacturers.
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Company
BEST PIPELINE EQUIPMENT CO.,LTD
Location
China Factory : Suzhou Industrial Park, JiangSu Province,China
Contact Person
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