ASME B16.5 Titanium Blind Flange (Ti Gr2, Ti Gr5) Class 300 Raised Face for Pipeline Services
The ASME B16.5 Titanium Blind Flange (Ti Gr2, Ti Gr5) Class 300 Raised Face is a critical component widely used across industries that demand high corrosion resistance and mechanical strength. Designed according to the ASME B16.5 standard, these flanges provide an effective sealing solution for pipelines, ensuring secure closures and reliable operation. Made from Titanium Grade 2 (Ti Gr2) and Titanium Grade 5 (Ti Gr5), these flanges are designed to withstand harsh operating environments where durability, strength, and resistance to corrosion are key factors.

Overview of Titanium Alloys
Titanium Grade 2 (Ti Gr2)
- Material Properties: Commercially pure titanium with excellent corrosion resistance in marine and chemical environments. Offers moderate strength and is more weldable than higher titanium alloys.
- Applications: Commonly used in industries where corrosion resistance is the priority, such as chemical processing, desalination, and marine applications.
- Advantages: Excellent resistance to oxidation, seawater, and acids, making it ideal for highly corrosive applications.
Titanium Grade 5 (Ti Gr5)
- Material Properties: Titanium alloy with 90% titanium, 6% aluminum, and 4% vanadium. It has higher strength and is used where mechanical performance is essential without compromising corrosion resistance.
- Applications: Aerospace, high-performance engineering, and applications requiring both high strength and corrosion resistance.
- Advantages: Exceptional strength-to-weight ratio, fatigue resistance, and high temperature tolerance compared to Ti Gr2.
Benefits of Using Titanium Flanges
- Superior Corrosion Resistance: Titanium is immune to rust and corrosion in environments like seawater, acidic solutions, and other chemically aggressive media. This extends the lifespan of the flange and reduces maintenance costs.
- Lightweight: Titanium alloys, particularly Ti Gr2 and Ti Gr5, are known for their lightweight yet strong properties. This is particularly advantageous in aerospace and high-performance engineering applications where weight is a critical factor.
- High-Temperature Resistance: Titanium performs well under both low and high-temperature conditions. Ti Gr5 can withstand temperatures up to 600°F (316°C), and Ti Gr2 can handle temperatures up to 450°F (232°C).
- Excellent Fatigue Resistance: Titanium is highly resistant to fatigue, which ensures that the flange performs reliably over an extended period, even under cyclical or fluctuating pressure conditions.
- Improved Durability: Titanium alloys exhibit outstanding durability, meaning components made from these materials are less likely to suffer from damage over time, reducing the need for replacements.
Applications of Titanium Flanges
- Chemical Processing: Titanium flanges, particularly Ti Gr2, are ideal for applications where pipelines carry chemicals, acids, or other aggressive fluids. Their resistance to corrosion ensures safety and reduces the likelihood of leaks.
- Marine and Offshore: In marine environments, where seawater can rapidly degrade standard materials, titanium flanges are used for high-performance and long-lasting sealing.
- Aerospace: In the aerospace industry, the need for lightweight yet strong materials is paramount. Titanium's excellent strength-to-weight ratio and resistance to corrosion make it an ideal choice for flanges used in aircraft or rocket systems.
- Desalination Plants: Titanium flanges are widely used in desalination facilities where they help in processing seawater into fresh water, enduring both high pressure and corrosive seawater conditions.
- Power Generation: Used in power plants, especially those dealing with high-temperature fluids and chemicals, titanium provides a long service life.
Key Features and Advantages of ASME B16.5 Titanium Blind Flanges
- High-Quality Standards: Conforms to the ASME B16.5 standard, ensuring proper dimensions, pressure ratings, and flange compatibility.
- Robust Sealing Capabilities: The raised face design enhances the flange's ability to form tight seals when used with gaskets, improving the overall integrity of the piping system.
- Ease of Installation: The standard bolt hole pattern and bolt circle dimensions make it easy to install and replace when required.
- Cost-Effective Over Time: Despite the higher upfront material cost, the reduced maintenance requirements and longer lifespan make titanium flanges a cost-effective choice in the long run.
Technical Specifications
Feature | Specification |
Standard | ASME B16.5 |
Flange Type | Blind Flange |
Material | Titanium Grade 2 (Ti Gr2) / Titanium Grade 5 (Ti Gr5) |
Pressure Rating | Class 300 |
Face Type | Raised Face |
Temperature Range | Up to 450°F (232°C) for Ti Gr2, Up to 600°F (316°C) for Ti Gr5 |
Bolt Holes | Standard Bolt Circle, varies by size |
Corrosion Resistance | Excellent resistance to seawater, acidic solutions, and other aggressive environments |
Weldability | Good weldability (especially Ti Gr2) |
Common Applications | Chemical processing, desalination, aerospace, marine, power generation |
Finish | Smooth surface finish for sealing |
Strength | Ti Gr2 – Moderate strength, Ti Gr5 – High strength |
Fatigue Resistance | High fatigue resistance, especially Ti Gr5 |
Weight | Lightweight, reducing structural load |
Alloy Composition (Ti Gr5) | 90% Titanium, 6% Aluminum, 4% Vanadium |
Material Properties | Excellent fatigue and crack resistance, high temperature tolerance |
Sealing Performance | Raised face provides an enhanced sealing interface with gaskets |
Enhanced Durability and Safety Features
- Non-Combustibility: Titanium has an inherent resistance to fire and high heat, making it safer in fire-prone areas, such as industrial plants or offshore oil rigs.
- Impact Resistance: Titanium exhibits high impact resistance, making it durable in high-pressure systems that undergo mechanical stress or vibration.
- Non-toxic: Titanium is biocompatible and does not release harmful toxins, making it suitable for applications in industries like food processing and pharmaceuticals.
Conclusion
The ASME B16.5 Titanium Blind Flange (Ti Gr2, Ti Gr5) Class 300 Raised Face offers a combination of superior corrosion resistance, high strength, and long-term durability. Whether utilized in chemical, aerospace, marine, or desalination applications, this flange delivers reliable sealing and structural integrity, even under extreme conditions. The use of titanium in these flanges offers both performance and cost-effectiveness, making them a smart choice for systems where long-term reliability is critical.
The unique benefits of titanium alloys (Ti Gr2 and Ti Gr5) make this product an indispensable solution for industries that demand the highest quality components for sealing and securing pipeline systems under harsh environmental conditions.