EN1092-01 Titanium Slip On Flange Gr5 Gr7 PN25 SORF Raised Face Flange Pipe Plate for Pipeline Systems

2. Grades of EN1092-01 Titanium Plate Flange Gr5 Gr7

1. Titanium Grade 5 (Ti-6Al-4V):

   Composition: Titanium Grade 5 is an alpha-beta alloy consisting of 90% titanium, 6% aluminum, and 4% vanadium. This composition provides a balance of properties that make it the most widely used titanium alloy.

   Strength: It offers excellent strength-to-weight ratio, making it suitable for aerospace, marine, and industrial applications where lightweight strength is critical.

   Corrosion Resistance: Grade 5 titanium has good corrosion resistance, although not as high as pure titanium (Grade 1). It is still highly resistant to most environments.

   Temperature Resistance: It maintains its properties at elevated temperatures, making it suitable for applications in gas turbines, exhaust systems, and other high-temperature environments.

   Applications: Aerospace components (airframes, jet engines), marine equipment, medical implants, automotive components, sports equipment, and industrial machinery.

    

   Titanium Grade 7 (Ti-0.15Pd):

   Composition: Titanium Grade 7 is a titanium alloy with 0.15% palladium added, enhancing its corrosion resistance.

   Corrosion Resistance: Grade 7 titanium is highly resistant to corrosion in reducing and mildly oxidizing environments, including chlorides. It is more corrosion resistant than Grade 2 titanium.

   Weldability: It offers good weldability, making it suitable for applications requiring fabrication and assembly.

   Strength: Grade 7 titanium has lower strength compared to Grade 5 but is still adequate for many applications.

   Applications: Chemical processing, desalination, marine environments, and other applications where superior corrosion resistance is required. It is also used in medical implants where biocompatibility and corrosion resistance are critical.

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3. Specifications for EN1092-01 PN25 Titanium Plate Flange

4. Why We Choose Titanium Plate Flanges in the Applications?

Titanium plate flanges are chosen in various industries primarily due to their unique properties and advantages that make them suitable for specific applications where other materials may not perform as effectively.

Titanium exhibits exceptional corrosion resistance, especially in aggressive environments such as seawater, chemical processing, and marine applications. This resistance to corrosion helps extend the lifespan of equipment and reduces maintenance costs.

Titanium has a high strength-to-weight ratio, making it significantly stronger than many other metals such as stainless steel or aluminum alloys while being much lighter. This property is crucial in aerospace, marine, and automotive industries where weight savings are critical.

Titanium is biocompatible and non-toxic, making it ideal for medical implants such as orthopedic implants and surgical instruments. It integrates well with the human body and minimizes the risk of adverse reactions.

​Titanium retains its mechanical properties at elevated temperatures, making it suitable for applications where thermal stability is required. This includes aerospace components and industrial processes involving high heat.

​Titanium has a low coefficient of thermal expansion, similar to stainless steel. This property helps maintain dimensional stability in various temperature conditions, ensuring reliability in critical applications.

​Titanium is known for its durability and long service life, even in harsh operating conditions. This makes it a cost-effective choice over the long term, despite its higher initial cost compared to some other materials.

Titanium plate flanges are preferred in industries where their unique combination of properties is essential, such as aerospace, chemical processing, desalination plants, and offshore oil rigs.

5. The production process of titanium plate flanges

Material Selection:

Titanium Alloy: The process begins with selecting the appropriate titanium alloy based on the application requirements. Common alloys include Grade 2 (Ti-CP), Grade 5 (Ti-6Al-4V), and Grade 7 (Ti-0.15Pd), chosen for their specific mechanical properties, corrosion resistance, and other relevant characteristics.

Cutting and Forming:

Raw Material Preparation: Titanium billets or bars are cut into suitable lengths based on the required flange dimensions.

Forging or Rolling: The titanium material is heated to an optimal temperature and shaped using forging or rolling techniques to form the initial flange blanks. For weld neck flanges, this includes forming the neck and the flange face.

Machining:

Turning and Milling: The forged or rolled titanium blanks undergo precision machining operations. This includes turning to achieve the desired outer diameter (OD) and milling to create the flange face (raised face, flat face, or ring type joint per ASME B16.5 specifications).

Drilling: Holes are drilled into the flange to accommodate bolts and ensure proper alignment with the connecting pipes.

Weld Preparation:

Beveling: The ends of the weld neck flange, especially the area where it connects to the pipe, are beveled to facilitate welding. Proper beveling ensures strong weld joints and effective fusion.

Welding:

Welding Process: Titanium weld neck flanges are typically welded using TIG (Tungsten Inert Gas) welding or similar methods suitable for titanium alloys. Welding is performed with care to maintain a shielded atmosphere (argon or helium) to prevent contamination and oxidation, which can compromise the titanium's corrosion resistance.

Weld Inspection: Post-weld inspection includes non-destructive testing (NDT) methods such as dye penetrant testing or ultrasonic testing to verify the integrity of the welds.

Heat Treatment (if required):

Annealing: Depending on the titanium alloy and specific requirements, annealing or stress-relieving heat treatment may be applied to optimize material properties and reduce residual stresses.

Final Inspection and Testing:

Dimensional Inspection: Each weld neck flange undergoes rigorous dimensional checks to ensure it meets precise tolerances and specifications, including those set by ASME B16.5.

Visual and Surface Inspection: Visual inspections ensure there are no surface defects or imperfections that could affect performance or integrity.

Pressure Testing: Hydrostatic or pneumatic pressure testing may be conducted to verify the flange's pressure integrity and leak resistance under specified conditions.

Surface Treatment and Finishing:

Surface Coating: Depending on the application, surface treatments such as passivation or anodizing may be applied to further enhance corrosion resistance or improve surface finish.

Marking and Identification: Each flange is marked with essential information such as material grade, size, pressure class, and manufacturer identification for traceability.

Packaging and Shipping:

Once inspections and testing are completed satisfactorily, the titanium weld neck flanges are carefully packaged to prevent damage during transport and storage. They are then shipped to customers or distribution centers.

6.Different Face Types Of Titanium Plate Flanges:

Raised Face (RF) Flange:

1. Design:

   • Raised Surface: A Raised Face flange has a small portion around the bore drilled slightly larger than the pipe's diameter. This creates a ridge (or raised face) above the flange's surface.
   • Sealing Surface: The raised face serves as the primary sealing surface where the gasket rests. It provides a tight seal when compressed against the mating flange.

2. Advantages:

   • Enhanced Sealing: The raised face design concentrates the gasket compression into a smaller area, improving the effectiveness of the seal.
   • Protection: The raised face helps protect the flange surface from damage during handling and installation.

3. Applications:

   • Common: Raised Face flanges are more common in standard industrial applications where a reliable and leak-free seal is essential.
   • Pressure Ratings: Suitable for higher pressure applications as the raised face allows for better compression of the gasket.

Flat Face (FF) Flange:

1. Design:

   • Smooth Surface: Flat Face flanges have a flat or smooth surface without any protrusions or raised areas around the bore.
   • Sealing Surface: The sealing is achieved by placing the gasket directly on the flat surface of the flange.

2. Advantages:

   • Ease of Alignment: Flat Face flanges are easier to align during assembly because there are no raised surfaces to contend with.
   • Space Saving: They require less space compared to Raised Face flanges, which may be advantageous in tight installations.

3. Applications:

   • Specialized: Flat Face flanges are typically used in low-pressure and non-critical applications where sealing requirements are less stringent.
   • Special Gaskets: May require special gaskets (such as full-face gaskets) that cover the entire face of the flange to ensure proper sealing.

Choosing Between Raised Face and Flat Face:

• Pressure and Sealing Requirements: Raised Face flanges are preferred for higher pressure applications where a reliable seal is critical. Flat Face flanges are suitable for lower pressure applications or where space constraints are a concern.

• Gasket Selection: The choice of gasket (such as ring-type or full-face) depends on the flange facing type (RF or FF) and the application requirements for sealing integrity.

7. Common Standards of Titanium Flanges