Alloy Steel F11 Flanges are the best choice for the industries which require high temperature, pressure, and demanding operating conditions. They are known for their excellent stability and superior mechanical strength, these flanges play a critical role in keeping piping systems secure, leak-free, and efficient. If you are thinking of sourcing it or for export projects this will guide help you to make your decision.
What is Alloy Steel F11 Flanges?
Alloy Steel F11 Flanges are forged flanges and are a part of ASTM A182 standard. It is made from a combination of chromium and molybdenum low-alloy steel grade designed specifically for high-temperature and high-pressure environments. Their chromium content helps them protect against oxidation, scaling, and chemical corrosion, and molybdenum content provides them with additional strength making them suitable for extreme working conditions. The flanges made from F11 are engineered in such a way that they provide secure connections to systems that handle steam, fluids, and gases under high temperatures.
Why choose Alloy Steel F11 Flanges?
Choosing Alloy Steel F11 Flanges comes up with several key features. These key features are:
· Excellent resistance to high-temperature oxidation
· Strong mechanical properties and superior hardness
· Reliable performance under fluctuating temperatures
· Better corrosion resistance than standard carbon steel
· Long service life with minimal maintenance
· Available in multiple flange types for versatile applications
Applications of Alloy Steel F11 Flanges:
· High-temperature steam pipelines
· Petrochemical plants and refineries
· Boilers, heaters, and pressure vessels
· Power generation units
· Gas processing and chemical plants
· Heat exchangers and industrial furnaces
Specifications of Alloy Steel F11 Flanges:
Specifications: Alloy Steel F11 Flanges
F11 Flanges Standards: ASTM, ASME Flanges, ANSI Flanges, DIN Flanges, EN Flanges, BS Flanges etc.
F11 Material Class/ Pressure: 150#, 300#, 400 #, 600#, 900#, 1500# & 2500#
Gr F11 Flanges Dimension: 150#, 300#, 600#, 900#, 1500#, 2500#. PN6, PN10, PN16, PN25, PN40, PN64 etc.
Grade F11 Flanges Face Type: Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
F11 Pipe Flanges Size: ½” to 36″
SA Gr F11 Steel Flanges Grade: ASTM / ASME A182 F1 / F5 / F9 / F11 / F12 / F22 / F91
AS F11 RTJ Flanges Wall Thickness: SCH.10, 20, 30, 40, 80, 120, 160, STD, XS, XXS.
Chemical Composition of Alloy Steel F11 Flanges:
Grade
C
Mn
Si
S
P
Cr
Mo
ASTM A182 F11
0.15
0.3 – 0.6
0.5 - 1
0.03
0.03
8 – 10
0.9 – 11
Mechanical Properties of Alloy Steel F11 Flanges:
Grade
Tensile Strength (Mpa)
Yield Strength (Mpa)
Elongation %
A182 F11
275
485
20
Conclusion: Alloy Steel F11 Alloy Steel Flanges have proven their value in some of the toughest industrial environments. Their blend of durability, temperature strength, and corrosion resistance makes them a practical choice for critical operations. Industries that prioritize safety, performance, and long-term reliability continue to trust F11 flanges for efficient piping solutions.
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