ASTM A182 F11 Blind Flanges Raise Face RTJ ASME B16.5
ASTM A182 F11 Blind Flanges Raised Face RTJ ASME B16.5 Manufacturer
As a leading manufacturer of ASTM A182 F11 Blind Flanges Raised Face RTJ ASME B16.5, we specialize in providing alloy steel flanges designed to meet the highest industry standards. Our F11 alloy steel blind flanges are crafted from chromium-molybdenum steel, offering exceptional strength, corrosion resistance, and performance in high-pressure, high-temperature environments. These flanges are crucial components in various industries, including power generation, oil & gas, chemical processing, and petrochemical.
What is ASTM A182 F11 Blind Flanges?
ASTM A182 F11 is a specification for chromium-molybdenum alloy steel used in high-temperature and high-pressure applications. Blind flanges are used to seal the ends of piping systems, preventing flow and allowing for safe shutdowns and maintenance. Raised Face RTJ (Ring Type Joint) is a flange face design that includes a raised surface to accommodate a Ring Type Joint gasket, ensuring a leak-proof, reliable seal in demanding conditions. The ASME B16.5 standard governs the dimensions, materials, and performance of flanges, ensuring compatibility and quality across industrial systems.
ASTM A182 F11 Flanges specification
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Material Strength: Made from ASTM A182 F11, these flanges are ideal for high-temperature systems. They provide excellent strength, creep resistance, and fatigue resistance, making them perfect for challenging environments.
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Temperature and Pressure Resistance: These flanges are designed to perform at temperatures up to 650°F (343°C) and high-pressure environments, ensuring safety and durability in systems like boiler piping, chemical reactors, and power plants.
- Corrosion Resistance: The F11 alloy steel provides excellent protection against corrosion, making these flanges suitable for use in chemical processing, petrochemical, and offshore applications.
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Compliant with Industry Standards: Manufactured in compliance with ASME B16.5, these flanges meet the rigorous dimensional, pressure, and temperature requirements, providing reliable and safe connections in industrial piping systems.
Applications of ASTM A182 F11 Blind Flanges Raised Face RTJ ASME B16.5:
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Power Generation: Widely used in steam systems, boilers, and piping systems for power plants, where high temperatures and pressures are prevalent.
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Oil & Gas: Commonly found in offshore rigs, refineries, and petrochemical facilities, where secure, leak-resistant seals are required for high-pressure fluid systems.
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Chemical Processing: ASTM A182 F11 blind flanges are ideal for reactors, pumps, and valves in chemical processing systems, ensuring integrity and performance under extreme conditions.
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Marine Engineering: With their excellent corrosion resistance, these flanges are perfect for marine piping systems and offshore oil rigs, where they can endure harsh seawater environments.
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Petrochemical & Refining: The combination of high strength and corrosion resistance makes them a go-to choice for demanding applications in refining, chemical plants, and petrochemical industries.
Why Choose Our ASTM A182 F11 Blind Flanges?
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Exceptional Quality: As a trusted manufacturer, we ensure all our ASTM A182 F11 Blind Flanges meet or exceed industry standards, providing reliable and safe solutions for high-pressure and high-temperature systems.
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Superior Strength & Durability: Manufactured from F11 alloy steel, these flanges provide excellent creep resistance, fatigue strength, and high-temperature resistance, making them suitable for long-term operation in demanding environments.
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Leak-Proof Sealing: The Raised Face RTJ design ensures a secure, leak-proof seal, even in systems under extreme pressure and temperature conditions.
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Corrosion Resistance: The F11 material offers resistance to corrosion, ensuring these flanges maintain their integrity in harsh chemical and marine environments.
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Compliant with ASME Standards: Our flanges are manufactured in strict accordance with ASME B16.5, ensuring that they meet the highest standards for dimensions, pressure ratings, and material quality.
ASTM A182 F11 is a chromium-molybdenum alloy steel specifically designed for use in high-temperature and high-pressure applications, such as power generation, chemical processing, and petrochemical systems. This material is commonly used for flanges, fittings, valves, and other components in high-temperature environments.
Chemical Composition of ASTM A182 F11 (Typical)
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.05 – 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.035 |
| Silicon (Si) | 0.50 – 0.80 |
| Chromium (Cr) | 1.00 – 1.50 |
| Molybdenum (Mo) | 0.44 – 0.65 |
| Nickel (Ni) | ≤ 0.50 |
| Copper (Cu) | ≤ 0.25 |
| Vanadium (V) | ≤ 0.10 |
| Aluminum (Al) | ≤ 0.05 |
| Iron (Fe) | Balance (remainder) |
Mechanical Properties of ASTM A182 F11 (At Room Temperature)
| Property | Value |
|---|---|
| Tensile Strength | 70,000 – 95,000 psi (485 – 655 MPa) |
| Yield Strength | ≥ 30,000 psi (205 MPa) |
| Elongation | 20% (minimum in 2 inches or 50.8mm) |
| Hardness | 150 – 210 HB (Brinell hardness) |
| Impact Toughness | 20 ft-lb (27 J) minimum at 0°F (-18°C) |
| Modulus of Elasticity | 29,000,000 psi (200 GPa) |
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Heat Treatment: A182 F11 is heat-treated to achieve a fine-grain structure and improved strength properties, often used in tempering or normalizing processes.
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Creep Strength: The alloy has good creep resistance, making it suitable for high-temperature service environments (up to 650°F or 343°C).
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Fatigue Strength: Offers enhanced fatigue resistance, crucial for pressure vessels and components subjected to cyclic loading.

ASTM A182 F11 Blind Flanges Raise Face ASME B16.5
Contact Us for Your ASTM A182 F11 Blind Flanges Raised Face RTJ ASME B16.5
As a leading manufacturer of ASTM A182 F11 Blind Flanges Raised Face RTJ ASME B16.5, we provide custom sizes, pressure ratings, and finishes to meet your exact specifications. Our flanges are suitable for a wide range of industrial applications where safety, performance, and durability are critical.
Request a quote today or contact us for more information about our high-performance blind flanges that are built to withstand the toughest conditions.
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