Titanium Flanges Weld Neck Flange Class 150 Long Weld Neck Flange Raised Face

Product Specification

Class 150 Long Weld Neck Flange Raised Face Titanium Grade 2 and Grade 5

Introduction:

In the realm of industrial piping systems, the Class 150 Long Weld Neck Flange Raised Face made from titanium alloys, particularly Grade 2 and Grade 5, plays a critical role in ensuring leak-proof, durable, and corrosion-resistant connections. These flanges are a cornerstone in industries that demand high-performance materials capable of withstanding extreme conditions. This article delves into the product characteristics, advantages, applications, and manufacturing process of the Class 150 Long Weld Neck Flange Raised Face, focusing on Titanium Grades 2 and 5.

Product Characteristics:

Material Composition:

• Grade 2 Titanium: Also known as commercially pure titanium, Grade 2 is the most commonly used titanium alloy. It has excellent corrosion resistance, especially in non-oxidizing acids, seawater, and chloride environments. With a composition of approximately 99% titanium, Grade 2 offers good strength while maintaining high ductility and formability.
• Grade 5 Titanium (Ti-6Al-4V): This is the most widely used titanium alloy due to its enhanced strength. Grade 5 contains 90% titanium, 6% aluminum, and 4% vanadium. The addition of aluminum and vanadium increases its strength and heat resistance, making it ideal for demanding applications that require both strength and weight reduction.

Flange Type:

• The Long Weld Neck Flange has an extended neck that provides a stronger, more stable connection with the pipe. This design is particularly useful for high-stress applications where the pipe experiences high pressure or vibration.
• The Raised Face refers to the raised area around the flange's circumference, which creates a better seal when paired with a gasket, reducing the risk of leaks and improving the performance of the piping system.

Class 150:

• The Class 150 specification refers to the pressure rating of the flange, which is typically 150 psi. This rating indicates that the flange is suitable for low-pressure systems, offering reliable performance in less demanding environments.

Advantages:

Corrosion Resistance: Both Grade 2 and Grade 5 titanium alloys are known for their superior resistance to corrosion. Grade 2’s ability to resist chloride corrosion makes it perfect for applications in the chemical and marine industries. Meanwhile, Grade 5’s higher strength and corrosion resistance, especially in high-temperature and high-pressure environments, make it ideal for more aggressive conditions.

Strength-to-Weight Ratio: Titanium alloys like Grade 2 and Grade 5 provide an excellent strength-to-weight ratio, making them ideal for industries where weight reduction is essential without compromising on strength. Grade 5, in particular, is known for its outstanding mechanical properties, including higher tensile strength and fatigue resistance, which ensures longevity in demanding applications.

Durability: Titanium is inherently durable, and both Grade 2 and Grade 5 are resistant to cracking, oxidation, and high temperatures. The raised face design of the flange further enhances its durability by providing an optimal surface for sealing, thus reducing maintenance and ensuring long-term operational reliability.

Weldability: Titanium alloys, especially Grade 2, are highly weldable. Grade 5 also offers excellent weldability but requires careful handling due to its higher strength and potential for weld distortion. These alloys can be welded efficiently to create strong, leak-proof connections, particularly with long weld neck flanges that demand high precision.

Applications:

Chemical and Petrochemical Industries: The corrosion-resistant properties of Grade 2 and Grade 5 titanium make these flanges particularly suitable for chemical processing and petrochemical applications, where aggressive chemicals and high temperatures are involved. These flanges are often used in reactors, pipelines, and heat exchangers where safety and longevity are paramount.

Marine Industry: Titanium’s natural resistance to seawater and salt environments makes Grade 2 the preferred material in marine applications. The Class 150 Long Weld Neck Flanges are commonly used in seawater piping systems, desalination plants, and offshore oil platforms, ensuring long-term, corrosion-free operation.

Aerospace and Aviation: In the aerospace industry, Grade 5 titanium is widely used for its strength and lightweight properties. These flanges are used in aircraft fuel systems, engine components, and hydraulic systems, where both strength and weight reduction are crucial.

Energy and Power Generation: Both grades of titanium are used in energy sectors, particularly in geothermal and nuclear power plants. The Class 150 Long Weld Neck Flange provides strong connections for piping systems, handling extreme temperatures and pressures without failure.

Medical and Biotech Industries: Grade 2 titanium is often used in medical implants due to its biocompatibility. Long weld neck flanges in titanium are also utilized in medical devices that require corrosion resistance and mechanical integrity.

Class 150 Long Weld Neck Flange Dimensions:

Manufacturing Process:

Material Selection: The first step in manufacturing titanium flanges involves selecting high-quality titanium alloys, either Grade 2 or Grade 5, based on the application’s specific requirements. Grade 2 is chosen for its excellent corrosion resistance and weldability, while Grade 5 is selected for higher strength demands.

Forming and Machining: The titanium billets are heated to a high temperature and then formed into flange shapes using techniques like forging or casting. Once the shape is formed, the flange undergoes precision machining to achieve the correct dimensions, including the raised face and bolt holes.

Heat Treatment: Both Grade 2 and Grade 5 titanium alloys may undergo heat treatment processes to enhance their mechanical properties. For Grade 5, this typically involves a solution treatment followed by aging to increase strength.

Surface Finishing: The flange surfaces, especially the raised face, are polished to a smooth finish to improve the sealing surface when paired with gaskets. This step is critical to ensuring leak-tight performance and meeting the required surface finish standards.

Inspection and Testing: Each flange is subjected to rigorous quality control, including visual inspections, dimensional checks, and non-destructive testing such as ultrasonic or X-ray inspection to ensure there are no internal defects. Pressure testing may also be performed to verify the flange’s ability to withstand the specified pressure rating.