ASTM B381 Titanium Grade 2 Flanges
Amardeep Steel Centre LLP takes pride in being a leading exporter and supplier of high-quality ASTM B381 Titanium Grade 2 Flanges. Renowned for their exceptional properties and advantages, these flanges are a preferred choice in industries that demand reliability and performance. In this comprehensive guide, we will delve into the key aspects of Titanium ASTM B381 Grade 2 Flanges, including their properties, advantages, and applications. Whether you’re an industry professional or simply curious about these remarkable components, this article will provide you with valuable insights.
What Are ASTM B381 Grade 2 Titanium Flanges?
ASTM B381 Grade 2 Titanium Flanges are specialized components used to connect pipes, valves, pumps, and other equipment to form a piping system. These flanges are manufactured from Titanium Grade 2, which is a commercially pure titanium alloy. Known for its excellent corrosion resistance, high strength-to-weight ratio, and biocompatibility, Titanium Grade 2 is widely used in industries such as aerospace, chemical processing, marine, and medical.
ASTM B381 is the standard specification that governs the production of titanium and titanium alloy forgings, including flanges. This specification ensures that the flanges meet stringent quality and performance standards, making them suitable for critical applications.

Properties of ASTM B381 Grade 2 Titanium Flanges
One of the primary reasons why ASTM B381 Grade 2 Titanium Flanges are highly sought after is their exceptional properties. Let’s explore some of the key properties that make these flanges stand out:
- Corrosion Resistance: Titanium Grade 2 flanges exhibit outstanding corrosion resistance, particularly in aggressive environments such as seawater, chlorides, and acidic solutions. This property makes them ideal for applications in marine, chemical, and offshore industries.
- High Strength-to-Weight Ratio: Titanium is known for its remarkable strength-to-weight ratio, which means that ASTM B381 Grade 2 flanges can withstand high loads while being relatively lightweight. This property is crucial in aerospace and automotive applications where reducing weight is essential without compromising strength.
- Biocompatibility: Titanium Grade 2 is biocompatible, meaning it is non-toxic and does not cause adverse reactions when in contact with living tissues. This makes ASTM B381 Grade 2 Titanium Flanges suitable for medical and dental applications, including implants and surgical instruments.
- Low Thermal Expansion: Titanium has a low coefficient of thermal expansion, which means that these flanges experience minimal expansion or contraction when exposed to temperature fluctuations. This property is advantageous in applications where dimensional stability is critical.
- Excellent Weldability: ASTM B381 Grade 2 Titanium Flanges have excellent weldability, allowing for easy and reliable joining with other components. This property is particularly important in industries where welding is a common fabrication method.
- Good Ductility: Titanium Grade 2 flanges possess good ductility, enabling them to be formed into various shapes without cracking or breaking. This property is essential in manufacturing processes where complex geometries are required.
Advantages of ASTM B381 Grade 2 Titanium Flanges
The unique combination of properties offered by ASTM B381 Grade 2 Titanium Flanges translates into several advantages that set them apart from other materials. Here are some of the key advantages:
- Longevity and Durability: Due to their excellent corrosion resistance, Grade 2 Titanium Flanges have a long service life, even in harsh environments. This durability reduces the need for frequent replacements, resulting in cost savings over time.
- Reduced Maintenance: The corrosion-resistant nature of Titanium Grade 2 flanges minimizes the risk of degradation, reducing the need for maintenance and inspection. This is particularly beneficial in industries where downtime is costly.
- Weight Savings: The high strength-to-weight ratio of Titanium Grade 2 allows for the use of thinner and lighter flanges without compromising performance. This weight reduction is advantageous in applications where weight is a critical factor, such as in aerospace and transportation.
- Versatility: ASTM B381 Titanium Flanges are versatile and can be used in a wide range of industries, including aerospace, marine, chemical processing, oil and gas, and medical. Their ability to perform reliably in diverse environments makes them a preferred choice for engineers and designers.
- Environmental Friendliness: Titanium is a recyclable material, making ASTM B381 Grade 2 Titanium Flanges an environmentally friendly option. At the end of their lifecycle, these flanges can be recycled, contributing to sustainability efforts in various industries.
- High-Temperature Resistance: Titanium Grade 2 flanges maintain their mechanical properties at elevated temperatures, making them suitable for applications involving high heat, such as in the aerospace and power generation industries.
- Non-Magnetic: Titanium is non-magnetic, which makes ASTM B381 Titanium Flanges ideal for use in applications where magnetic interference must be avoided, such as in certain electronic and medical devices.


Schedule and Size Chart
Nominal Pipe Size (NPS) | Outer Diameter (OD) | Thickness | Bolt Circle Diameter (BCD) | No. of Bolt Holes | Bolt Hole Diameter |
1/2″ | 3.0 in | 0.125 in | 3.0 in | 4 | 0.25 in |
3/4″ | 3.5 in | 0.125 in | 3.5 in | 4 | 0.25 in |
1″ | 4.0 in | 0.125 in | 4.0 in | 4 | 0.25 in |
1.5″ | 5.0 in | 0.125 in | 4.5 in | 4 | 0.25 in |
2″ | 6.0 in | 0.125 in | 5.5 in | 4 | 0.25 in |
3″ | 7.5 in | 0.125 in | 7.0 in | 4 | 0.25 in |
4″ | 9.0 in | 0.125 in | 8.5 in | 8 | 0.375 in |
6″ | 12.0 in | 0.125 in | 11.0 in | 8 | 0.375 in |
8″ | 14.0 in | 0.125 in | 13.0 in | 8 | 0.375 in |
10″ | 16.0 in | 0.125 in | 15.0 in | 8 | 0.375 in |
Mechanical Properties Chart
Property | Value |
Yield Strength | 345 MPa (50 ksi) |
Ultimate Tensile Strength | 450 MPa (65 ksi) |
Elongation (50 mm gauge) | 20% |
Hardness (Rockwell) | 70-85 HRB |
Modulus of Elasticity | 110 GPa (16,000 ksi) |
Specifications Chart
Specification | Description |
Standard | ASTM B381 |
Grade | Grade 2 |
Type | Flanges |
Form | Forged, machined |
Dimensions | NPS 1/2″ to 10″, custom sizes available |
Finish | Standard, custom finishes available |
Chemical Composition Chart
Element | Composition (%) |
Titanium (Ti) | Min. 99.2 |
Iron (Fe) | Max. 0.3 |
Oxygen (O) | Max. 0.25 |
Carbon (C) | Max. 0.08 |
Nitrogen (N) | Max. 0.05 |
Hydrogen (H) | Max. 0.015 |
Physical Properties Chart
Property | Value |
Density | 4.51 g/cm³ |
Melting Point | 1668 °C (3034 °F) |
Thermal Conductivity | 21.9 W/m·K |
Electrical Resistivity | 0.0000026 ohm·m |
Application Chart
Application | Industry |
Marine Equipment | Offshore and Marine |
Chemical Processing Equipment | Chemical Processing |
Aerospace Components | Aerospace |
Medical Devices | Medical and Dental |
Oil and Gas Industry | Oil and Gas |
Heat Exchangers | Energy |
Power Generation | Energy |
Why Choose Amardeep Steel Centre LLP?
As a leading exporter and supplier of ASTM B381 Grade 2 Titanium Flanges, Amardeep Steel Centre LLP is committed to providing our customers with high-quality products that meet the most stringent industry standards. Here are some reasons why you should choose us as your preferred supplier:
- Extensive Inventory: We maintain a comprehensive inventory of Grade 2 Titanium Flanges in various sizes and specifications, ensuring that we can meet your specific requirements promptly.
- Quality Assurance: Our flanges are manufactured to the highest quality standards, ensuring that they meet the ASTM B381 specification. We conduct rigorous testing and inspection processes to guarantee the performance and reliability of our products.
- Competitive Pricing: At Amardeep Steel Centre LLP, we offer competitive pricing on all our Grade 2 Titanium Flanges, providing you with exceptional value for your investment.
- Global Reach: With a strong global presence, we are capable of delivering our products to customers around the world. Whether you are located in North America, Europe, Asia, or any other region, we can meet your delivery needs.
- Customer Support: Our dedicated customer support team is always available to assist you with any inquiries, technical questions, or orders. We are committed to providing you with a seamless purchasing experience.
- Customization: We understand that every project is unique, and we offer customization options for our ASTM B381 Grade 2 Titanium Flanges to meet your specific requirements. Whether you need a particular size, shape, or finish, we can accommodate your needs.
Grade 2 Titanium Flanges are a versatile and reliable choice for a wide range of applications, thanks to their exceptional properties and advantages. From aerospace and marine to chemical processing and medical industries, these flanges have proven their worth in some of the most demanding environments.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality ASTM B381 Titanium Grade 2 Flanges. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.