ASME B16.5 Titanium Weld Neck Flange Class 300 Gr2 Gr5 Gr7 WN Flange Weld Neck Raised Face RFWN For Industrial Purposes

2. ASME B16.5 Grade 2 Grade 5 Grade 7 Titanium Industrial Flanges WNRF Class 300

Titanium Grade 2 (Ti-CP):

Composition: Commercially pure titanium with a composition of 99.2% titanium, 0.25% iron, 0.3% oxygen, and trace amounts of other elements.

Properties:

Strength: Relatively low compared to alloys; higher than many steels but lower than alloyed titanium grades.

Corrosion Resistance: Excellent in most environments, especially against chlorides.

Weldability: Good weldability and fabricability.

Applications: Chemical processing, marine environments, medical implants (non-load-bearing), and architecture.

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

Composition: Titanium alloy containing 90% titanium, 6% aluminum, and 4% vanadium.

Properties:

Strength: Excellent strength-to-weight ratio, superior to Grade 2 titanium.

Corrosion Resistance: Good corrosion resistance, not as high as Grade 2 but suitable for many environments.

Temperature Resistance: Maintains strength at elevated temperatures, making it suitable for aerospace and high-performance applications.

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

Titanium Grade 7 (Ti-0.15Pd):

Composition: Titanium alloy with 0.15% palladium added.

Properties:

Corrosion Resistance: Excellent resistance to corrosion, particularly in reducing environments.

Weldability: Good weldability, suitable for welding and fabrication.

Strength: Lower strength compared to Grade 5 but adequate for many applications.

Applications: Chemical processing, desalination plants, marine environments, and other applications requiring superior corrosion.

3. Specification of ANSI B16.5 Class 300 Titanium Weld Neck Flange

ASME/ANSI B16.5 300LB WN Flange/Standards, Dimensions & Weight

4. Why We Choose Titanium Weld Neck Flanges in the Industry?

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 Weld Neck Flanges

The production process of titanium weld neck flanges involves several meticulous steps to ensure they meet stringent quality standards and performance requirements. Here's an overview of the typical production process:

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. Titanium Weld Neck Flange Inspections

Visual Testing (VT): This involves inspecting the surface of the weld and the flange visually to detect any visible defects such as cracks, porosity, or improper weld profiles.

Ultrasonic Testing (UT): This technique uses high-frequency sound waves to detect internal defects within the material, such as voids, inclusions, or cracks. It's particularly useful for thicker sections of titanium welds.

Radiographic Testing (RT): This method uses X-rays or gamma rays to produce images of the internal structure of the weld and flange. It's effective for detecting internal defects and assessing weld quality.

Magnetic Particle Testing (MT): MT is used to detect surface and near-surface defects in ferromagnetic materials. However, since titanium is not ferromagnetic, this method might not be applicable unless there are magnetic materials nearby or coatings that can be magnetized.

Penetrant Testing/Dye Penetrant (PT): PT involves applying a dye penetrant to the surface of the weld and then removing excess dye to reveal surface-breaking defects. This method is useful for detecting small cracks, porosity, and leaks.

Eddy Current Testing (ET): ET uses electromagnetic induction to detect surface and near-surface defects in conductive materials like titanium. It's useful for detecting corrosion, cracks, and variations in material properties.

Acoustic Emission (AE): AE involves monitoring the acoustic emissions from a material under stress to detect changes indicative of defects like cracks or leaks. It can be used for both weld and base material inspection.

7. FAQ

1. Any discount?

A: The prices we quote are all wholesale price in the first place. Meanwhile, our best price will be offered according to your order quantity, so please specify your purchase quantity when you inquire. The more your order, the better discounts we will offer.

2. Are you a manufacturer?

A: Yes. As a manufacturer with 13 years of experience, we’ve gained adequate expertise and proficiency. Relying on our own factory, we offer you our best-quality products as we have fully equipped Product Department and QC Department.

3. How do I know if my products are delivered?

A: We will inform you Tracking No. for your reference or you can contact us anytime for shipment information.

4. Has your company acquired any certificate?

A: We are certified manufacturer with our auto parts approved by ISO9001 Quality Management System.

5. How about quality of products?

A: We guarantee strict control on every detail of the products. Each product is carefully inspected and tested before delivery.

6. What about payment terms?

A: T/T, L/C, Western Union Paypal are accepted.

7. How is your MOQ?

A: Minimum quantity for certain items is only 10kg. But MOQ can be lowered when you buy several different kinds of products together. For more details, please feel free to contact us at anytime.

8. How about delivery time?

A: Usually within 5-7 days via express delivery. But it depends on your order quantity as well.